I forgot to post here that DB answered my question about Open PVE on 26 May. I just asked for his thoughts on it, and he answered in the Live Stream for 2.1 Release day.
I don't want to put any words in his mouth, so if you want to see what he said, check out the livestream recording.
It's at about 42:30 in the live stream here:
https://www.youtube.com/watch?v=gEtHu3AXw2Q