There’s little enough to go on, no question, but as for thoughts on and what I would like to see from G5…
I’m happy to see it’s going to be a fantasy series along the general lines of My Little Pony ’n Friends and FiM – no big surprise, I think, given that the more fantasy takes on MLP seem to have been the ones that proved more popular.
I’m not particularly surprised by seeing the ways characters like Twilight, AJ and Fluttershy have been reimagined, and to be honest I’m not entirely sure why so many people are so shocked. By and large, Hasbro seems to be doing what they’ve always done with the franchise: you have a more or less stable core to each character that connects all the incarnations, but the additional details and personality change or don’t as needed. For instance, I could see the issue with Applejack if this was a continuation of G4, but G4 Applejack is not a continuation of G1 Applejack, either – they both like apples, they’re both outdoorsy and they both tend apple orchards, and they have the same color scheme, but besides that they’re clearly different characters.
Earth pony Twilight is going to take some getting used to, though. Maybe earth pony magic is going to be more overt this tame around?
To be honest, I hope the main cast won’t consist entirely of reimagined G4 characters. I’m very happy at least four are, if nothing else, being considered, but I’d like to see some other characters introduced in the main roster. The franchise restructured the main casts between most reboots, and I think introducing some new main characters (whether more or less straight up invented like Rarity was or as revamped versions of older characters) would help make G5 feel more like its own thing rather than G4 take 2.
Of course, I hardly expect to see the other characters just not appear. Even in G4, the entire main G3 cast has appeared as at least secondary or one-off characters.
I’m not entirely sure how I feel about the many worlds thing, but I don’t think I’ll form hard opinions until we get more official info in that regard.
And of course, it’s probably worth keeping in mind that this is all still at the design phase and there’s two years to go before release. It’s entirely possible things present in the leaks will be changed or dropped outright, or new things added, between here and 2020.
All in all, I remain hopeful.