MarxistLast was very unpopular.
Heh... god it was like trying to run down a football field, but with a ceiling so low you couldn't actually do meaningful/interesting rocket jumps. Also the football field had a heavy shooting you the whole time, maybe a sentry too. Plus there's a sniper/stickies on doors (since you don't need to sticky the point) so you are forced to pop early only to end your uber with one rocket left and an enemy combo staring you down with 100%. So much fun.
Can't forget mid had so many edges that would eat your rockets for 0 damage, that was fun too.
The aesthetics were cool, but it was really rough to play in many ways.