The Primal Powers book adds tribal feats, which are weaker than Skill Focus if only you have them, but grant an additional boost to everyone within a moderate range who also has the same feat.
I was wondering if there's any design reason not to apply them to other skills.
The biggest impact will probably be for Arcana, Nature, and Religion, since they're used for rituals. The party (assuming a party of 5) getting a +5 on all their checks to aid the ritual could be pretty significant. Any particular reason it could be game breaking?