I totally agree, I bought Ghosts as soon as it came out having played MW3 from its release date. I always played Mercenary - Team Deathmatch, Kill Confirmed and Domination. I am not in a Clan and never have been, yet now I am continuously playing against 3/4+ 'team mates' who cover each other's backs meaning you get your butt kicked throughout the game (usually Domination).
As you said, it gets very old - VERY quickly.
I would love to continue playing Ghosts in the same way I played MW3 - can't really be that much of an ask can it be??