Yup, I figured a shot in dark while blindfolded and spun 3 times. Never know though and wouldn't know unless I asked...
They definitely have bumped folks in past when its token and you have some flights coming up. I got the idea from someone else when I was silver, and they did it for me when I was silver.
I can use miles but it would only be on one segment of the trip. 40K miles + $300 fee I think it what I was quoted (would have been $250 for Mfare but return leg where I would use it was a Q or H).