With FD here, that model was very similar to the MC JJ model, and I'm all for those types of JJs. Jump sniping combined with free 3rd person PoV largely ruined MW4 for me (plus the nerfing of smaller weapons, the heat model, the doubling of most 'mechs armour, the list goes on....). And although fun, they were very much like tribes in MW2 and MW3 (fun in a Nova

) and as Lag-shooting tended to be what decided fights nobody really minded.
But with MW4 "fixing" lag they became a colossal pain in the arse for anyone who wanted to play a believable sim, you can't see over walls, and you can't aim while your entire 'mech does the equivalent of ejection, ergo people who built a career in 3rd person Jump snipers were just as annoying as the people in other games who constantly used exploits in the game mechanics like bunny hoppers.
I went right off MW4 quickly (right after Black Knight was released) and stayed away untill NBT brought out the Hardcore patch, it's hard to hate a dedicated jumpsniper in forced 1st person games, everytime they light up those JJs they're gambling on where they guess the enemy will be, they're not just using an exploit (so you don't see them so often).