Love the new dance mode, but it would be even better if it wouldn't necessarily be on top of everything else. Or alternatively, if it would be more transparent. For example, it would be fun to have a girl dancing in a corner of my screen while I'm doing something else. (To some extent, the same is true for walk mode and fly mode. Those would also be better if the wouldn't conflict with other things on screen. Let a girl fly around while I'm writing something, for example.) Probably, a "no stage" option would be good too. (Although I like the stages.)
A few other minor UI things:
* Scroll wheel for zoom in/out is a bit counterintuitive. Every time I want to scroll down or up through something with the scroll wheel, I end up zooming in or out instead. I recommend ctrl+scroll wheel for zooming.
* The UI is getting increasingly cluttered. The DIY sliders don't need to be on the main UI. And the girl selection overview doesn't need to be in the main UI either.
* Moreover, the girl selection pictures don't match the general style of the app. Everything else is blue and round, but the girls are on pinkish square backgrounds. This looks quite bad and out of place. It wouldn't be so bad if it where a separate menu, but if it has to be part of the main UI, it should look much better than this.