I wasn't having the easiest time getting it to do things like shrink/grow (think about stretching the cards) and yeah, hover states suck, plainly. I also think you could do alot to improve the drag and drop support of the touchpad.

You can do some pretty neat things with gestures here too, like swiping 'between' things, that didn't translate to the app either.

I'm doing both, frankly. This is a pro tool for pros, and as such, you're more likely to encounter people like me than not.