The way it is now, it very much feels like a dump stat, and one that isn't even very good or useful due to the way it works. If Larian are adamant on keeping it in the game in some form, it would probably work much better if it had significantly greater effects, but were both a groupwide effect, and something provided by rare items in the game, like say finding a special magical rabbit's foot, or some other trinkets that can be found.
*excite squees* I love the group effect idea! less worrying about who opens what.
