I know a lot of people will probably hate me for giving this idea, but here goes nothing.
How about we reduce the amount of LP gained from curios (or increase LP needed for skills), BUT instead of needing LP for abilities like survival you would need to study survival based curios, for UA and melee you would need to fight mobs and instead of LP your stats would slowly increase, I always found it funny how you can make a character study straw dolls which are farming related and add points to your mining and suddenly thanks to your farming knowledge you are able to dig out better quality ore. This would make the curios that you study actually matter, you wouldnt be able to just put anything in your desk.