Hmm so if I understand it correctly: It's not just that you get only 5 cross abilities, but you can only get them from two specific classes. So for example the only classes that would be able to use Raise (or Cure) would be Paladin, White Mage and Bard. The only classes that can use Invigorate are Dragoon and Monk etc.
This is really disturbing. For example for dungeons/endgame: Why would we want to bring a Dragoon or Monk or Marauder as damage dealers if the can't even offer the slightest support to the group. Everyone would bring Bards as damage dealers just for that reason, besides the fact that everyone is already bringing Archers now because of the easy damage they do and minor damage they take.