Board Thread:Speculation House/@comment-11188061-20131110130812/@comment-11188061-20131110135547

Only Weiss and Glynda has ever shown to be using different types of abilities; everyone else is just using that one Semblance ability they have.

Unfortunately, usually the final boss in many series are OP. You just don't really feel that way since before they could unleash their universe ending powers, the heroes ended their lives first.

This is just food for thought, really. I personally don't like the copy ability idea since I've already read quite a number of mangas that are like that, but the possibility is still there.