After a Hearthling got his Personal Beliefs to his liking ( Full Nature/Industry etc.) you should have the option to add the remaining Personal Belief slide to a specific LA ability. This LA Ability will raise your LA by 0.1% (For example). To reduce the OPness of this it should be capped at point (Ex. 50% LA).
This idea would take away the lack of Personal Belief slides you use now if you got to Full nature/industry etc.