Yesterday I was looking though forum when I saw a topic discussing a cap to be placed on combat skills. I personally Don't agree with the idea of a stat cap, however the complaints about grinding caught my attention. Grinding is not what this game is about, and grinders can really suck the incentive out of playing the game.
Back on topic,
My idea is a cap on how many learning points your character can get per day. Let's say around 20 000 LP per 24 hours (real time) . A cap would make it impossible to benefit from grinding AND give players that are getting tons of LP cap to consider changing from their beliefs to Tradition.