Bump up rev % after a certain pop threshold

[The Gorog]

I believe the reason why this mode is so rare though, is that it not only requires a certain amount of players, but also a certain amount of heads (3 or 4 atleast I believe).

I don't know where people get this weird idea that Rev requires a certain amount of heads. It's not in the public release, and I've seen and played a number of rev rounds with only 1 or 2 heads. There's a check for # of players and # of people who have Revolutionary Leader (and back then, Other Foes) checked.

Can confirm.  Recently got into a rev game where the captain was the only head.

Guess I'm completely wrong on that one then. 
But still, the "once every 2 months" wasn't an over exaggeration from me. I've seen about 2-3 times more Wraiths than Revs lately, although those might have been admin triggered ones.