I've been wanting a pokemon RP, and I do have some ideas for the use of an old character in this one, assuming you intend on running both of the pokemon RPs you've posted interest checks for.

I do have some concerns about the amount of motivation and freedom of exploration players will have if "the world is one big mystery," with it seeming like they're a bit directionless, as well as needing confirmation of every metaphorical step they take throughout places of relevance.