One thing that's interesting about rush is the decision whether to quick fold when antes come into play. The consensus on 2p2 is that its a leak, but I'm not sure.

Assuming you have an edge on the field, you want to get in as many hands in as possible. Wouldn't the extra value from playing more hands offset the losses of quick-folding? It seems like a much tougher question if you look at the final table bubble where stacks are shallower and you'll be in the blinds almost 50% of the time