What if your lp is split into two separate entitys?. When you recieve lp, 75% of it goes into a lp pool which you can spend for for non combat stuff IE exploration/survival/farming/etc and the other 25% into a combat lp pool. (doesn't have to be 75:25 ratio)
Something like this will also drastically reduce the amount of throwaway combat alts. Maybe even stop it altogether.
This would make alts much less of a requirement, because you won't need to create different alts for different tasks. Would be great for a guy like me who doesn't use alts. Also, people who otherwise would have just used all their skills into farming/survival, won't be sitting ducks.