Zaroua INT and CHA should give something tangible to Clerics and Shamans. This would opening more interesting gearing choices. WIS should remain their primary stat, but replacing a 3 WIS piece with a 10 INT piece should be a choice those classes could make.
^^ This. I've been saying the same thing for quite a while. What's the point of all the different stats when 1 point of WIS (or INT, for int casters) is more valuable than 10 points in other stats? It gives you essentially no choice in gearing up.
Tanks, OTOH, have to balance agi, str, sta, dex, ac ... and unless they're a fighter, int or wis as well. It's a tough equation, with no one right answer. And that makes it interesting.