New hair looks great. You'll probably get the original too so I wouldn't worry. Forget the light up gimmick, more trouble than it's worth.
I dunno, they seem to have some extra tricks up their sleeve on Phoenix. A base lightup wouldn't be that hard. If you've ever seen the commander cody legendary scale bust, something similar would be easy to pull off with a replaceable bulb. You would basically have a bulb on the base and the translucent phoenix would just slot over it. I think that would be just amazing. But I think they could do some other stuff that is equally awesome to spice this up some more.