6 minutes ago, Aidon said:
Mercy -- Very useful for RP to be able to fight without intending to kill.
Lore -- See where items come from can be useful.
Rescue -- Very useful when in Gear/Winter/Etc, also has interesting RP benefits.
Haggle - Obvious to the few classes that lack it.
I wouldn't be in favour of dark knights or crusaders being able to get mercy. It'll make what is meant to be a challenging climb for those first few weapon levels too easy.
Lore is a newbie friendly perk. I can't remember the last time I actually used it on my characters that had it, with the exception of my crusader for obvious reasons.
Having any class with the ability to pick up rescue seems to take away the diversity that certain classes bring. Having a warrior, crusader or paladin come along with you to gear/winter/etc should make them appreciated, beneficial and sort after.
Haggle is a odd one. I know Paladins don't get it, which makes getting missile scrolls a little expensive unless someone picks them up for you. Not sure if this is balance, RP reasoning. It does seem trivial though.