This is going to sound like something te may not like, but I was thinking: what would it be like if the ponies went into the world of Littlest Pet Shop, and vice versa? I think that would be a pretty cool thing, but if the ponies did go into the LPS world, people would wonder what kind of animal they would be. Would they still be tiny ponies o another animal, o would they turn into humans? (EG doesn't count as they are humanoids, not 100% human.)
Also, if the pets and their guardian, Blythe Baxter, did go into the pony world, would she turn into a pony and the pets stay as pets, o would the pets turn into ponies as well?
Whichever one of these happens, what would they do? How would they find a way home? What fun would they have, and who will befriend one another?
Anyways, those are only my thoughts. What do te think? (Yes, this is quite short because I didn't put much thought into this one.)