Yeah, unless you take a mod which is already bug free, and with source code available, it would take some work and it wouldn't be necessarily better than the actual system... I have some (basic) modding experience and I can't think about what I could add, to make it definitely better than k/d score.
Maybe a player id to avoid renaming, or an elo-based score similar to etpub's k/d score... getstatus is in the game engine, not in mods, so if you wanna still use it you have to change xp, because that's what getstatus shows. Or implement a totally different thing, which means much more work. All in all it wouldn't be such a big improvement over the system you are already doing. So np
Actually everyone got his own idea about what killed/kills/could kill ET, that is yours, mine could be (and probably is) different, everyone likes a different kind of play. I understand what you mean, though, because for you rating probably means killing a lot of noobs in laggy servers full of players, while with a rating mod there would be only few raters there, and no noobs. For someone it could be nicer for others boring. I respect your opinion.