It's a pain in the ass on servers where there are plenty of people, you mow down a couple of people and they both drop nades, drives me mad.
I say get rid of it, it warrants no bonus to your score at all if anything it just serves to keep it at a 1-1.
Servers with small numbers, not so much but it's still a giant dick move all in all.
Personally I don't use it and I don't think people who have been killed should be rewarded with any perk to even it out.
Not to fond of last stand, although that requires the player to aim.
It's also not in competitive tournaments at all, which is fantastic I'd play a ladder match over a pub any day.