you can use original ps1/ps2 discs with an emulator too.
not really an expert on the subject, but I think GCN emulation is considered to be pretty good, and PS1/2 emulation isn't perfect yet but probably passable and better than 64/saturn emulation.
I finished playing We <3 Katamari on an emulator with a ps4 controller, and it seemed a bit fiddly in recognizing the diagonal directions which was a bit of a problem for that game, but it's probably not as big a deal for rpgs. Also it might have worked a bit better if I fiddled around a bit more (since I assume it was just assigning keyboard keys to the control stick) but I'm not super technically inclined.
The only certain death in the universe is Mother Hitton's Littul Kittons.
Not changing this line until I beat Seven Heroes (2/24/07) - Fulfilled 2/20/18