My bad, I didnt read into the "floating" thing. Myself Im so happy about the new interface and docked windows with the uncluttering that came with it, I havent even thought about them being floating or not. Mind you, I never used the command-1-9s (except command-8) myself. I have been using the docked for everything.
Working on a 15" makes floating windows very redundant in my setup. But yeah I can see where they could come in handy. Its not a complicated thing to have as an option, Apple might implement this as an option later.