I've been playing SMRPG on my SNES mini again for the first time in decades, and I've forgotten just how much fun it was. Truly a fantastic game and a standout of the RPG genre even today. I think Geno has the strongest shot of anyone of being a playable fighter this time around, so I don't think he needs much more support from the likes of me, but if he gets in, I absolutely wouldn't mind.
I know some people have struggled to come up with a stage for him (a Forest Maze stage would be too obvious and boring in my opinion), but earlier today I did think of a stage idea that could work really well from Super Mario RPG: Exor!
Exor is not only the most memorable boss from the game, but him plummeting into Bowser's keep is also the event that sets the game into motion. He functions as the gate to Smithy's factory dimension, and is absolutely instrumental in transporting Smithy's goons to Mario's world. He's also large enough to be a perfect stage in his own right. The stage would take place largely on his hilt, as well as a pair of destructible battlements from Bowser's castle beneath him.
Exor himself would be a stage hazard in his own right, as his eyes would cast spells like Aurora Flash (puts people to sleep), Venom Drool (plants flowers on people's heads), Flame Wall, Water Blast and a bunch of other destructive spells from the battle against him. His mouth would also function as a hazard, as he would occasionally open it and chomp down on anyone foolish enough to wander into it, sending them flying. He could also suck people into his mouth to do this as well.
Exor himself could also be fought - the pommel would be his weak point, but in order to destroy the pommel, you must first destroy his right eye and left eye, just like in the battle in the original game. Not sure what I would call this stage - "Exor" is too simplistic a name. I thought of calling it "The Contested Keep", but "Bowser's Stolen Castle" was suggested by someone as well, and that works too.