I've also enjoyed Wano quite a lot, especially because of how hard it is to defeat Kaido and how much screen time / plotlines Oda has given Zoro.
I think the aging Momo stuff seems to be going the way i would enjoy it, he's still a kid in mind, will cry a lot, but will be able to become a huge dragon, take Luffy up there, maybe trade some words with Kaido, but focus on saving the Island and leaving Luffy to fight him.
I would even enjoy Momo getting Ame no Habikiri and killing Orochi, like the myth of the blade.
But i've seen so many people hyping up this idea of Momo fighting / defeating / killing Kaido just based on the aging up, and that would fucking suck in my opinion.