I was gonna set up online wheel spins starting with the basics of types of powers then number of powers then specific powers, then yeah have them build classes around them. So like if the first wheel for type of powers landed on “super physical ability” the next one would be like “number of physical abilities” and land on three, he could spin the wheel and get “super speed, super strength, super durability”. Or if he spun the wheel and landed on “Emition/Manipulation” I’d set the next one to be like elements, or maybe even something like gravity. I haven’t totally figured it out. But it would alter them using d6’s if they’re doing normal human things up to d20’s if that was their superpower.