Well - I have Drive "things" happening all over the place. When I open iDraw, I get a list of iDraw files that are on Drive, opening from the top of the left column in the finder from a dedicated iDraw (albeit a generic) app icon, outside of the Drive folder - therefore, you'd expect an iDraw folder to appear in the dedicated Drive folder in the finder with the rest of whatever folders decide to appear (it doesn't). I don't really want to go over, yet again, why there are differing folders in www.icloud.com to my Mac and different again on my iPhone and iPad (oh, I just did).
I will post this link again (no one commented on it last time), but it is strange that a simple command in Terminal reveals a folder on my desktop that seems to work exactly as I expected iCloud Drive to work in the first place - Macs had it all along! Here is THAT link:
http://www.blowmybubble.com/b/1972/iCloud+Folder+%26gt%3B%26gt%3B+Creating+a+Dro pbox-like+folder+of+your+%23iCloud+synced+files+for+easy+location+-+useful+for+w eb+uploads+etc
So - I leave it up to you / far cleverer people than myself as to why the above works, but Apple can't work it with all their massive resources. But then again, they already have - as the link illustrates. Perplexing, odd, strange.
By the way, I was once "burned" by Mobile Me because I forgot to back up my files from there after it closed, losing pics of my kids etc. Never really forgot that. I just stick with Apple though - they're so infuriatingly good. And so is DropBox.