Random discussion and gripe! Having just finished Dark Side of the Moon, is Swarming the worst keyword ever? Not worst as in poorly designed, but that one little word changes everything. Beyond the first scenario in each half swarms become end-game bosses every time they show up, hit so hard it's functionally impossible to accept an attack of opportunity from them, and in general just require so much to deal with it's terrifying.
My group was a little slow to pick up on just how nasty they actually were, not a mistake we'll make again.