I'm in
Going to try using Solarus Engine, I briefly tried it out nearly a year ago but got frustrated with how annoying it's level editor could be but I think that was mainly due to me trying to do maps with bunch of verticality. https://www.solarus-games.org/
Looking at the remaining theme options I feel like I can do something for each of them though for some them theme would just be story and setting based. I probably should figure out how to do cutscenes or something in Solarus.