Circusland. Circusland. Circusland. Circusland. Circusland. Circusland. Circusland. ... Circusland.
I'm not sure I'd say it's a "mess" but I could easily see it becoming so. It's definitely the most toddler oriented area of the park, even within Fantasyland. Not that there is anything wrong with that but I'd say it could lead to more wear and tear faster than other areas.
I'd say Disney as a whole is become "princessland." Does that mean that the princesses are pervasive everywhere? No. But they certainly are highly more prevalent than they used to be. And within the MK, other than M&Gs, Philharmagic is the only place since the destruction of Toontown Fair where Mickey (or his house) can be seen in an attraction...and he isn't even the main character. So I think there is something to be said that there is less of the mouse's influence in the parks. I've never ever once understood why there is no attraction featuring Mickey/the classic characters (and no Barnstormer doesn't count).
Anywho, as I stated previous, I love that Mickey, and Donald are included in Philharmagic, and equally love that we get to see classic scenes and hear classic songs. I would be truly upset if this were to go. There is plenty of room for them to put a dark ride somewhere else without gutting the attraction.