Do not force level caps on content - You segregate the player base

[Jocko]

if there is content that require a party of 8 lv50's anyone would expect the difficulty to be scaled appropriately, but lets say the highest member is lv60, I expect the difficulty to be scaled to match that as well. I think its better to scale up than down.

I guess I don't get it. Again, it sounds like the same idea, except balancing for one level range and setting players at that level is a far simpler and efficient method as opposed to trying to balance content around having two 45's, three 50's, and three 57's in the same group. In fact, I don't see you could even do that.