So I was wondering if anyone has given any thought to using the race creation guide to create a monster leveling system.
The idea is that instead of gaining a level in a class you gain RP and can spend it on choices from the builder, you would also gain HD/BAB/etc. based off of your racial type. Ideally this would be used for creatures built with the race builder that are not necessarily humanoid or that don't lend themselves to traditional classes well.
What do you think would be a good amount of RP per level and what other rules would you think should be implemented with this kind of system?