Absolutely love it. For anyone who thinks it's a console port, it's not, and feels not that different from BF2 (which is a pure PC game).
The lack of prone, is initially disappointing, I think it was taken out for technical reasons rather than anything else (eg imagine testing for glitches with destructible scenery and prone! )
It also makes a snipers job a little harder -> which is no bad thing
I think it's going to be huge, and most importantly bring community spirit back with the required teamwork, dedicated servers and great gameplay.
For dedicated CoD peeps, it will take a while to adapt (it took me a while to go the other way) but it's worth it