Most if not all of these suggestions have been covered, in some cases several times.
I seriously doubt any solution will arrive unless it comes directly from MS, I also believe that solution won't happen until Windows 10...
And we should expect Microsoft to get it right in Windows 10 why? They didn't get it right in Windows 7 or any of its versions or in Windows 8 or any of its versions. This thread goes back three YEARS. I've no faith they'll get this or anything else right
in upcoming product releases. The only reason I'm even here is that the university for which I work requires that we use Microsoft. At home, we're Apple all the way. Yeah, it was more expensive, but it more than pays for itself in absence of aggravation. Even
my oldest iPad, which has been handed off to a teenager, still works like a dream. Immediate boot, smooth updates, no problems. (I repeat, even on Apple second generation iPad.) Microsoft doesn't much care whether individual users have to deal with problems
since they have such a massive corporate audience -- but it sucks for those of us who have to work in those offices.
FWIW, I wasn't trying to delete anything. I was merely trying to change the name of a folder in Word -- which insisted I had a file open in the folder. I did not. I shut down Word and tried again. Same issue. For some reason, it believes there's a document
open somewhere that prevents my renaming the folder. It's absurd.