I would say "you could always get a Saturn Pro Controller", but I dunno how financially well off you are for such suggestion. But the Pro Controller is useful for when you want to play old Sega games on PC.
I used to own
this one from Retro-Bit and yeah, definitely mapping all attack buttons to the front buttons back then.
Wanna try Saturn version too someday (if local retailers still sell one of course, importing is too expensive), I don't know how different it is compared to Mega Drive one, but not now since I don't have any desktop PC anymore and not planning to get any soon.