UA: Giant Soul Sorcerer

[MechaTarrasque]

The issue with sorcerers as superheroes is that there isn't a lot of built in incentive for leveling up (other than "everyone else is doing it"). Presumably a wizard wants to know more, a paladin wants to fulfill his/her oath, the warlock wants to get the most out of his/her deal before the patron turns him/her into a deadlock, the rogue wants to be a master thief\assassin, etc.

(Captain Kirk Voice): Must. Not. Make. Getting. Luckier. Joke.

 

[Paul Farquhar]

I've never fell characters needed an "incentive" to level up. They adventure, for reasons that usually have nothing to do with their class. "levelling up" is a by-product.