I guess personally to me G4 was a little hard to get into because from all the fanart I saw before, I assumed it would be a more serious action adventure show with some drama kind of like Sonic the Hedgehog. But I got a little dissappointed when I realized it was mostly low stakes comedy. I still enjoyed the show from time to time but I was always more of a fanfiction and fancomic guy instead of a show guy.
So I guess what I'm saying I would like a slightly more serious take on MLP. But of course add some slapstick and 4th wall breaks to make it fun.
Eh thats just what I would personally like not that it's needed. I just hope it succeeds on its own merits.