All ideas are very good. I think like I thought about 50% of this ones. Did you feel the same?
Particlularly enterprise software, it's sooooo bad, and its a huuuuge market, but seems nobody dare to make something new, or I'm wrong?
I would give a lot for something like Google Books, but with a possibility of subscription, not buying from Amazon or some publisher. Don't think it's legally possible though...
Nice, I dont think it will solve some problem for most of the users. Better to think of it as a new tool for online research. Lacking advanced features, but I'm sure they will come.