So you maybe scared a little bit of in-game reports or whatever may come from devs if you will be reported too much but there is a simple solution!!!!
Introducing

Yep, it's right! Steam family sharing. It's allow you to share your own games with your family, friend or anyone else who can you trust but there is also great feature coming with it.
YOU CAN SHARE GAMES WITH YOURSELF
What does it mean?
If you create a new account, all your games from your main acc will be automatically available
BUT since in-game profile in CoD series games linked to your SteamID, every time when you'll create a new acc
you'll get a new CoD profile!!!
Of course Valve has foresaw that and they've made VAC ban sharing between accounts. This mean if you get VAC banned on your fake acc, your main acc will also be blocked.
BUT since there is no VAC in Ghosts, only in-game Live Anticheat you can play freely without any hesitation
So what's you need to do?
1. Open Steam settings
2. Go to "Manage family sharing and deviced"
3. Authorize your own computer
4. Create a new fake account
5.
PROFIT
This is also applicable for Black Ops 1 and Black Ops 2 (which has advanced Treyarch anticheat) but you need some private hack which undetectable by VAC (especially Black Ops 2. You can play without fear if you purchased private cheat. If you get caught by TAC, you just can create a new acc and play further)