In the campaign I'm about to run, I'd like to ignore multiclassing XP penalties and give any race with a Favored Class of Any another bonus to compensate for losing that small advantage. I was thinking of letting them choose a certain number of skills to become permanent class skills. But, having never played in a game that uses multiclassing XP penalties, I have no idea how useful a Favored Class of Any is, and thus don't know how many permanent class skills I should hand out. 1? 2? More? What do you think?