I think the Now Playing-tab should be revamped into something more "useful" and more nice-looking. Maybe to somehow make it a plugin or something like that or to have it's layout editable, so that users could make their own layouts as with the theathermode and such.
I think it would be more appropriate to have the playlist at the bottom and stuff like album cover(s), lyrics & info above that.
In J.River Media Center it is possible to have vizualisations, lyrics, trackinfo, 3Dstuff in various forms at the top. It's very nice I'd say. As it is now the now playing just looks like the other modes (Inbox, Library and so on.)
And if this would become editable for users, the possibilities for nice and modern layouts are endless ...
Surely, someone must agree?
My Now Playing in MusicBee:
Some examples from J.River Media Center: