RE Video cards - my GeForce FX 5500 card usually works just fine in CoH, and just a touch laggy in CoV (common areas) when the zone is crowded. I don't buy that someone with a 6200 or 6600 can't play when my 5500 does OK most of the time. For that matter, I feel much the same about most of the specs involved - I have a gig of ram a nd an AMD 3000+ 1.99 gHz processor, and except for the two weeks after a major patch, the game runs fine (as long as the server isn't crowded). Folks who run higher processors and better RAM claiming they can't play? Something fishy there.
But I just come to expect that for the first week or two after patch, I'm gonna get LCTM'd regularly. That's just how this works, normally. One day, I'll get rich and upgrade my system... but so far, I'm lucky, and the game does a pretty good job.
The only thing I'd really, REALLY like to see is a way to recover timed missions lost due to lag/LCTM/etc. I've lost two or three timed mish's thanks to mapserver disconnects... THAT'S annoying.