I have the game on PC. It was a bit of a rough start with performance problems. In fact, it wouldn't even run on my Core i5 PC without making a change in the config.inf file. Seriously? The i5 is probably one of the most common CPU's out there and your game had a showstopping bug on day one?
They have since fixed that and I am running smoothly at about 144 FPS with my 144hz G-Sync monitor which is making for an awesome playing experience.
As for the game play, I haven't touched the campaign besides a few minutes in Co-Op with a friend. Multiplayer is where it's at for me. I am disappointed that ZERO players are playing some of the new modes like Safeguard. That is a fun mode from what I've been able to play but the playlist is always empty. As for the modes that people are playing, it's COD. I've played COD from the very first release and still enjoy it. I think the best COD games were MW1 and MW2. I have more hours in MW2 than any other COD game and I still play it. That game just had the best maps, challenges, and scorestreaks of any COD game IMO. Black Ops 3 feels similar to Black Ops 2 with the added ability to boost jump and slide. I like the boost jumping. It adds to the challenge and makes the other players less predictable.
I've been having fun with the specialists. I've been using the gravity spikes. That is a very satisfying way to get a multi-kill.

I took some random clips and threw them in iMovie and it spit out a movie trailer. Haha