I'm all for this change. The current game makes people rely far too much on leveling EVERYTHING to be an effective player, to include battle classes. It doesn't matter to me that I have almost every DoH to 50, it matters that they make it better for everyone in the long run. It's not like you still wont be able to level all your DoH's to 50 yourself, but now you wont have to if that isn't your desire.
Pretty sure this is another thing that will upset the "50 in everything" group, but that's ok with me :) Upset away!
