1: Of course sunset will be in it.  she might even offer them some friendly advice on their budding friendship.  Maybe even play matchmaker.  But who says she needs to be the main focus all the time?  these are specials.  Who knows what'll happen.2: They will "bounce" together as well as the writers need or want them too.  Trixie makes sense from a writing, fan and merchandising perspective.  Or did you forget the new EQG Trixie toy that's come out around the same time as the starlight toy?.  I'm not saying it's concrete proof, just that the timing is pretty convenient. And finally, Did you just say Trixie doesn't have a personality?  That's a deal breaker right there.  we can't be friends anymore.