[@KatherinWinter]
considering you can basically have full rein to control how fast he can develop aka how much experience he can gain from something, and what he can get from enemies dropping things. which can be various stuff including simply ingredients for other utility skills later on (like crafting and alchemy), money, weapons, equipment, etc.... so he doesn't go out of control. believe it is better to leave the development to the GM in this type of character, so the character can't become super powerful. only thing i have control is the character itself, his specific stat points, and maybe some of it's skills.