They've gotten better about getting rid of the absolute stupid stuff in recent editions.
*ahem* User Controlled Killstreaks?
It's funny to watch people botch those, or to send them a rokket while their back is turned. Real downside to Blops 2 was no support tier that persists through death since I suck. :'(
But not one that's shitty like Ghosts, MW3 at least gave you the weaker offensive rewards after 10 kills or whatever. (Like I think you got the one bombing run that barely ever kills anyone after 15 kills, whereas in the regular tier it's like 5 kills or something.) Ghosts gives you a juggernaut drop and that's it iirc.
I guess the way AW does it is semi-okay.