This is not an idea, it is feedback, but if you want it in the form of an idea, how about making sure that your sharing/collaboration functionality works. I shared with 3 people, went on to make comments and add pages to the document and when I closed out, all the new information was gone. The first time I clicked on save, I was required to give it a different name and then it didn't bring over the shared people.

Also, while working on making things work, I spent 10 minutes trying to get to a place where I could give feedback. It is odd that you go out of your way to ask if people want to give feedback and then you make it extremely difficult to do so.

Seriously Adobe, this is beneath you.