[Lord Azagthoth]

My players may lower a skill with 1pt per scenario (for high skills it will take 4 scenarios to raise it one level, and vice verse although when taking one point of a full level immediately drops it with 1 level and 3pts remaining).

I don't allow player to spend points on Talents during the campang its not part of the campaign itself.

Sometimes, between long-running campaigns, they are allowed to raise an attribute (like ST, HP, FP).