So here comes a couple of ideas.

First I think AP's should always get atleast one charge from every paladin or goodie healer they kill, regardless how "deadly" the paladin are.(This might already be in, I dont have any first hand info and if it is I appologize.)

Let bards sing resist even if they are affected of it, like it is now if the bard gets it and one in the group does not. The groupmember cannot have it until in runs out on the bard.

Improve lore practice(ooold whine I know), let lore be easier to practice at..A: Higher rank or B: More hours into the characters.
Because a more seasoned adventurer should have learned more about the world and its items.

Same with the cabal power discern, perhaps make its extra perks rank dependant instead of practice dependant.