...and, I'm pretty sure this sort of game could be realized with a fairly simple tweaking of the old 'Boot Hill' rules set. (Yes, Boot Hill... showing my age a little, perhaps? Does anyone even remember Boot Hill anymore?
)
It would definitely be interesting to see an "Old West" themed game take off around here, I think... Can't say that I'm much of a DM, myself, and, given my schedule of late, can't even say I'd be able to play, but I'd most certainly lurk if this got off the ground.
*moseys off to check the Google to see if Boot Hill is even available in any form or fashion, these days*
UpdatEdit: A google search for "Boot Hill RPG"
does bring up a decent list of results and resources... How 'bout that?