No I'm not going to write a proper sequel, please stop asking, I've sunk enough time into this as it is.
Well, Not Alone is completed. It's been a fun ride, but I've had enough of writing for awhile, so I'm going to take a break for now in favor of focusing on my college courses and other projects.
I just wanted to take this chance to say thank you to everyone who read and enjoyed my story. When I first started out, it was meant to be a small experiment I'd be writing for the benefit of maybe a dozen people. I'd never imagined it would take off the way it has, and I'm pretty damn flattered it did.
That said, I'm not quite done with this story. I know there's more to the universe some people wanted to see that I didn't really give attention to, and some fans have even submitted their own chapters. Because I don't want this to go to waste and I don't want to leave my followers cold, at some point within the next couple months I'll be starting another fic called Not Alone: Side Stories, a collection of not-strictly-canon material taking place during and after the war that people can enjoy or, if they're so inclined, contribute to.
I'd also like to make a few comments on why I wrote it the way I did.
---SPOILERS BELOW THIS LINE---
Russell's character was very carefully designed. He's a black South African because his country, and his ethnic group, had fallen victim to the White Man's Burden mentality that I find so disgustingly prevalent in the TCB genre. Rather than being an elite special forces member or grizzled army veteran, he's a scared kid who was press-ganged into driving a truck. The fact is, being in the army is an experience that fundamentally changes people, and I knew it would be very difficult to get into the mindset of someone who's been there with any degree of accuracy. It was much easier for me to put myself in Russell's position, since that was easier for myself (and, I'd wager, most of my readers) to identify with.
One thing I was very conscious to do was to write a story that had the opposite problem of the usual TCB story fare - making humans a Mary Sue race. I set about doing this in many ways: they fail to capture and punish Celestia. They set up internment camps to hold the ponies, even those who never did anything wrong. They really are, in many ways, physiologically inferior to the ponies. They suffer relatively high losses and win mainly through sheer numbers. But damnit, they survive.
And there's hope for friendship - true friendship - between the species in spite of everything. A friendship not based on enforcing conformity or making the "others" into a carbon copy, but on mutual acceptance of each other's differences, and a willingness to treat each other as people. Being able to look past the war, and differences in body and ability, and see that underneath it all there's a person surprisingly similar to themselves.
I'd like to think that much, at least, is in the spirit of the show.