GET IT! It is my favorite thing now-a-days. Theres so much you can do, and theres such a complex wiring system that can really grab your interest. I recommend.
When you're 15 prestige level 50, theres nothing else to do (Unlocking wise) so this could be a great opportunity to rstart!
When I was playing MW2 and I was 10TH Prestige level 70, it got boring after 3 weeks :-/
I'm sure there was a way of unbanning yourself using horizon... I've forgotten :-/
But my account got hacked, which I feel was worse, knowing that someone else was benefiting from my loss.