I'm a big DoD:S fan myself but I agree it's generally a lot more agressive, which is a shame because it degrades gameplay imho.
One of the only fps' I've seen proper cover usage in was CoD4/FH2/Project Reality and even there the majority of the people run around like retards
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You forgot about RO in the last part, though yeah all these Games are not completely free from idiots running around. (Also BIA as an honarable mentions since the few times I actually got a game up and running, Cover is pretty essential, but it pretty hard to judge since there is basically nobody online...)
Anyways... Mobile Weapons teams (Bazzokas team, MG Team, and Mortar Team) without 547865095402 Snipers running around in a FPS sounds really great.