The Conversion Bureau never made any sense anyway, but here are some places where it would have made less sense.
Not necessarily worlds where the ponies would lose the fight - just worlds where conversion wouldn't logically work.

Before suggesting a World, read the index to make sure I haven't done it already.

(My interpretation of Vdrake77's Idol Hooves during the Canterlot wedding)

*Edits for the first two chapters kindly provided by Airy Words!

Idol Hooves is the only changeling in the entire Equestrian Guard, and has been proudly serving for over a decade (while disguised). His enlistment buddy and friend, Shining Armor, the current Captain of the Guard, is finally taking the next step to officially becoming Princess Cadence' s personal guard, 24/7.

With most guards being reassigned to the wedding, Idol (by Luna's demand) is given the temporary assignment to be Princess Luna's personal gaurd due to a shortage in the Night Gaurds numbers.

Now, after another all-nighter looking for potential threats and with Idol's persistence, Luna finally agrees and turns in for the day. With Idol Hooves being the sole guard watching Luna's door, a promise was made that could ruin Eqauestria.

Princess Luna will get her well deserved rest, and nothing short of Princess Celestia herself will wake the deathly tired princess.

This story is a sequel to Undead Robot Bug Crusaders

Apple Bloom is an undead ghoul, but that's OK. She's finally come to terms with her condition, and is determined to rise above her curse.

Sweetie Belle is a robot, but that's OK. With manual in hoof, she's prepared to learn everything she can about herself, and whatever the future holds.

Scootaloo is a changeling, but that's OK. Changelings are citizens now, and she's ready to do her part to show the world changelings can be friendly too.

Together, the three of them are getting by, one day at a time. They may never get their cutie marks, but that's not going to stop them from having fun, finding their talents, and maybe even going a week without causing massive amounts of property damage. Maybe.

Meanwhile, Babs Seed is still blissfully unaware of the unusual destiny that awaits her, Diamond Tiara is slowly finding her place in the world, and Ponyville is still the weirdest town in Equestria. But then again, what else is new?

Edited by Bahamuttone

Cover Art by someone close to me IRL who probably doesn't want anyone to know she made pony art.

A different take on alicorn ascension. Sixteen years after arriving in Ponyville, Twilight Sparkle is excited to have invented a brand-new kind of spell, but it will come with consequences she cannot possibly anticipate. Meanwhile, threats in shadows around the world conspire to overthrow the Solar Throne. With her world turned upside down, she will have to come to terms with the role that fate has dealt her while straining to keep Celestia in power.

Now with a TVTropes page! Please show it some love! Also check out the official side stories, Designing Intrigue, and Love and Barriers! (With even more in my stories page!)

(Please Note: This story was started before any season three information was available. All episodes in season three and later are non-canon for this story, which also means there's no Crystal Empire in this one. In addition, the promotional map released close to the beginning of season three was also not available and is not compatible with this story. While the OC tag is active because there are OCs in the story, they're really just supporting characters. The focus is on Twilight.)

Also be sure to check out the Rites of Ascension Expanded Universe Group! We're working to develop the resources needed for other authors to try their hand at writing stories set in the Rites Universe!

The Book Two cover art was created by the amazing Silfoe! The original cover art can still be found at Violet Squiggle's deviantArt page.

Author's Notes, including proofreader's credits, can be found here!

"This is 100% Approved by Twilight's Library!"

This story is a sequel to The Changeling of the Guard

To live in Everfree Forest requires one to make a lot of sacrifices. Zecora can attest to that; for years the ponies were too frightened of her and her studies to even make contact.

Then again, that's for the best; the forest has never been kind to intruders. One never does know what fate can be levied for not treating it with the respect it demands. Still, she wouldn't want to live anywhere else.

The same can't be said for her newest ward.

More future-sidequel than sequel to Changeling of the Guard, as Idol isn't starring, but something I'm going to work on in tandem with it.

This story is a sequel to The Changeling of the Guard

This is a collection of various stories, short and otherwise, to go along with The Changeling of the Guard.

They aren't absolutely necessary, but the intention is to provide some background or additional material. Things like Topaz's research notes on Changelings, stories involving the other characters, and various insane things Idol has done that don't quite fit into the main plot. They might be chipper, they might be sad, but they're all canon to the main fic... or to whoever from the story is relating them.

Chapter 1 is the Nurse, mentioned briefly in Moonlighting, who brought Idol the Nymph.

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

This story is a sequel to Why No One Messes With Luna

Shepard has done the impossible. Old foes have set aside their differences, new friends have come into the fold, and the galaxy is more united than ever before. But the Reapers care not for the new alliances they face; they will fall, as countless civilizations before them fell. It is inevitable.

There is still hope. The Crucible, source of unimaginable power, has been constructed by the allies. With this new source of hope in tow, the allied fleets break through the Earth blockade and attempt to use this newfound weapon in a last, desperate attempt to defeat the Reapers and save the galaxy as we know it. Fleets of all races, soldiers of every kind, are united in this final stand.

Equestria, too, has sent what they can to aid in this final battle. Or rather, who, they can.

The Reapers have no idea what they have unleashed.

Warning: This story contains spoilers for ME3 and takes place during the ending of the series. This story is less approachable than the previous stories and may be confusing to those who are unfamiliar with the ME3 ending

Coverart is by Ziom05, on DeviantArt, and can be found here.

Ponies have spread to the stars thanks to advances in technology. In the advanced and luxurious Solar Explorer, Celestia travels to the first extra-solar colony world set up by her little ponies. Unfortunately, events elsewhere in the galaxy, unknown to them, have set in motion a cycle that has been repeated for countless eons… the reaping of sentient races. A Reaper dreadnought confronts the Solar Explorer, intent upon indoctrinating the leadership of the ponies and bringing them to heel.

Said Reaper quickly learns exactly why Celestia has earned the title Unconquered.

A Mass Effect crossover oneshot.

Now with a reading done by Scarlett Blade! Check it out!

Lotus is a professional masseuse. She sees the pony below the skin, and tends to coax just as much out of their mouths as their muscles. Late one day, she gives three very different massages to three close friends, all of whom mention a name she isn't familiar with: Applejack.

Featured by The Royal Canterlot Library and Equestria Daily

The original version of the story took 5th place in The Writeoff Association's February 2015 contest, "Closing Time"