The ultimate point of cross class skills is to get you to sample other classes and potentially broaden your horizons by doing so. As SE wants to encourage playing multiple classes on one character I don't see the point in removing this system. Especially seeming if you do the Novice training you get 30% bonus on levels below 30 with the ring, on top of all the other bonuses you get now.

You can pretty much sneeze and get level 30, which is where most cross class skills are at or close to.