I was hoping to like it, I really was. One thing is for sure, I am not their target audience. Everything I can do with it that I need to I can do between Onenote and Onedrive, with much greater ease. The interface itself seems very cumbersome, unfinished, and unpolished. They want to charge for this? I can see plainly that they are trying to do innovative stuff to stand out in an increasingly crowded market, but this has all the hallmarks of way to many developers with way to many managers looking over their shoulders.
It sounded cool, and I wanted and even tried to like it. Ultimately this falls flat on it face IMHO.
I played around with the team sharing features, I can see where that could quickly snowball into a cluster fuck.
Sorry Dropbox, back to the drawing board with you and best of luck. Oh and if you take another swipe? Have the ability to toggle off completely the whole team thing you are trying to do. Some of us would benefit great without it.