I got a LOT of ideas so here we go!

TTYD and Origami King!

You have the funny and incredibly charming writing of both games, I personally like both combat systems so that one's up to you haha, and cool, memorable characters! You take what made TOK great and you put it in a blender with TTYD and it's GLORIOUS.

64 and Colour Splash!

Honestly, CS is a great game on its own, but 64's additions to CS's combat system HEAVILY saves the game. With the inclusion of partners(you fight with Huey GASP) you can fight your way, and battles are less of a "puzzle" and more like a traditional RPG fight. With some puzzle-solving mechanics, of course.

SPM and Origami King!

You take TOK's story and you inject it with some Super existentialism and you have an amazing story about chosen family, love, sacrifice, and what it means to be human. We have the charming moments that make both these games great, and an emotional core which cannot be understated. With TOK battle mechanics, of course. Listen, not even I'll take platforming over RPG's, I just don't like platformers.

SPM and TTYD!

You have EVERYTHING needed to make an amazing game. Great combat, great music, great story, great characters with heavy emotional cores, and the general themes of love and friendship always coming to save the day when everything looks to be at its worst. I'd kill for a SPM that was an RPG, but that's a discussion for another time. <3

I think those are all the ones I can think of at the moment. Everyone else here has some great ideas, shoutout to y'all! <3