i don't think so.
ryuma is confirmed dead, and although wano citizens believe that he still exerts influence over the land of wano, his return was never prophesied.
on the other hand joyboy was never confirmed dead, and his return was prophesied.
also ryuma played a massive role in enforcing wano's isolationism policy, if he was to return then his will will clash with joyboy's will who's supposed to help open wano's borders to the world.