User blog comment:Rassilon of Old/Season two character designs revealed/@comment-209.221.49.37-20120424163805/@comment-5046348-20120424180234

It does give them an oppurtunity to evolve a characters powers though, which is something we haven't really seen yet. Only Zatanna seems to have made any real improvement on the power from, unless you count M'gann mmelting Psimon's brain. :P