I'm not nuts about it, but I kept my KpD above 1 in Halo, which is really the only game I played online (specifically, Halo 2 and Halo 3) after Crimson Skies, and I didn't keep up with my stats in that one. It didn't necessarily translate to wins all the time, but I was mixing it up and not costing my side the win more often than not.
There were certain maps I was just better than others. For example, in Halo 3 (and don't ask me why I know this), my KpD was 1.615 on Last Resort, 1.448 on Valhalla and 1.402 on Construct. Not coincidentally, I enjoyed playing on those maps. On Narrows, I was 1.120, 1.273 on High Ground, 1.272 on The Pit, 1.194 on Snowbound, and I really didn't care for those maps. Oh, here's one -- 0.600 on Blackout. But that was 3 games total, so a very small sample size. (A positive small sample size map is Ghost Town, with a 1.538 ratio in 4 games.)