awesome! Just what I wanted to hear!! Haha while I love all three original (and the only true) Spyro's, the first has always been my favorite.
It's your game, and I don't want to try to tell you how to make it, but here's a request from a huge fan of the genre: I would request that all levels be accessible within each hub world from the start as opposed to needing to be unlocked one at a time, as it makes the game feel much less linear and allows players to tackle whichever levels they want in whatever order per hub :) bosses are fine having to be unlocked though in my opinion
Again, that's your choice to make, but I figured I'd put my opinion out there.
I do, however, really like the idea that each hub world can have secrets to unlock. Will the hub worlds be interconnected with each other, like Dark Souls to an extent, or more like classic games where the various hub worlds are separated by portals etc.?
Here's an idea for the flights: the robotic character could attach itself to a rocket/spaceship and go into space for each flight or something?