Immersion doesn't need to come from combat realism in a CRPG, because CRPG involve hundreds of fights one after another, and nobody would realistically survive that.
Maybe in PnP, and with a group that doesn't particularly love combat, you may pull it off, and have a system that heavily penalizes being wounded, and makes fights dangerous, especially if you get hit first. In fact, several systems already work like that, and I am surprised at people here mentioning Darklands and not... V:TM, with its Health Levels and increasing penalties. Also, The Call of Cthulhu is a game where you'll see no one happy to be involved in a fight, and WFRP 1st ed was absolutely lethal. But there's a human DM taking care of things not being too harsh beyond the point where harshness is fun, while a CRPG with wounds bleeding and rotting would just be, IMHO, frustrating.
In any case, despite disagreement, good post.
Maybe in PnP, and with a group that doesn't particularly love combat, you may pull it off, and have a system that heavily penalizes being wounded, and makes fights dangerous, especially if you get hit first. In fact, several systems already work like that, and I am surprised at people here mentioning Darklands and not... V:TM, with its Health Levels and increasing penalties. Also, The Call of Cthulhu is a game where you'll see no one happy to be involved in a fight, and WFRP 1st ed was absolutely lethal. But there's a human DM taking care of things not being too harsh beyond the point where harshness is fun, while a CRPG with wounds bleeding and rotting would just be, IMHO, frustrating.
In any case, despite disagreement, good post.