In almost every modern FPS, the player moves fairly slowly and a huge proportion of enemies are equipped with instant hit attacks – pistols, machine guns, sniper rifles. This usually puts the player in the role of “damage sponge” – they’re intended to soak up a certain amount of damage from mostly unavoidable enemy attacks, then seek cover and heal up.
Heh, Borderlands. Wide open landscape (most of the time) but damn, it's impossible to avoid getting pelted. Damage sponge seems the only way to get through. Or worse, rushing into the mob and letting yourself get "killed" so you can kill something nearby while bleeding out and get a second wind (full shield, quarter life). This game loves to keep you mobbed. There is no way to avoid in-your-face combat. All non-humans move way faster than you. Lillith looks promising with her phasewalk, but I'm not far with that character yet.
Thing is, I instinctively tried to play Borderlands as I would Doom, and got nowhere fast. You can't sprint sideways, though dodging shots from enemies in front is not so hard. Anyway, I couldn't help thinking about this, since I'm heavily into the game right now.
Edit: Interesting read. Thanks for posting it.