Ratskinner
Adventurer
This isn't a terrible idea but every time I suggest that the same thing be done for spellcasters (making a limited list of spells that they can use as much as they want) people throw a tantrum.
I'd have XP'd you...but need to spread it around.
Anyway, consider me to be throwing whatever the opposite of a tantrum is about this idea. (Although, I'd still like ritual casting on the side.)