The Pie Sisters are the new CMC

After five seasons, MLP:FIM finally completed the CMC arc. They got their cutie marks. And their purpose: to help others find their own cutie marks, or help correctly interpret other's marks to find their true calling. It's so meta, I'm surprised their cutie mark isn't the Hasbro logo.

So where do we go with these 3? Hopefully no more than 2 episodes a season. One to help a foal, and one for an adult. I wouldn't be surprised if they cross paths with the now-reformed Sunset Shimmer this season.

What we have now is the Pie sisters. We finally met the entire family last season. It's time to build on these characters this season. What do we know about the Pies?

*We already know that Pinkie has a big sister complex with Maud. Apparently, it's not just an anime thing, it's also an Equestrian thing (see Twlight Sparkle with Shining Armor).

*We now know that the Pie sisters have an extra "sense." Is it just a Pie family thing, or is it an extension of Earth pony magic? And what is Marble Sense and Limestone Sense going to be?

*We know that the sisters go sightseeing and exhxnage gifts.

*We know that Pinkie tried to ship Marble and Big Mac.

Questions going forward for the rest of Season 6:

+ Was Maud assigned to look after Pinkie by their parents, or did she take on this responsibility on her own?

+ Where will Pinkie go with Limestone to exchange gitfts? Is Limestone allowed/wants to leave the farm?

+ Will MarbleMac be a thing going forward, or is Big Mac going to mack all the mares in Equestria? (Answer: Yep).

+ How were the Pie sisters as fillies? Was Maud always the voie of reason?

+ What does the rest of the family think of Pinkie? Do they know she is an Element of Harmony and a national heroine?

So many questions. So much potential storylines. Can we please move out of the CMC clubhouse, and bring us more of the Pie rock farm?