If you put a gun to my head this is what I would say about the game so far. I'm level 26 at the moment.
Good things....
1. Hit detection is really good
Bad things....
1. Weapon variants! Just makes the game so unbalanced (you know when you got killed by something special cause you watch the kill cam like what the @#$% was that gun?

)
2. Matchmaking (I know it's a beta but after all these years no excuses accepted here on matchmaking)
3. Game is a step backwards from BO3. Call me crazy but the wall running, jumping and sliding felt better in BO3 than it does in this game. (Maybe it will feel better with a proper ST for it)
4. Game feels cheesy. The graphics are cheesy. COD use to be a Military shooter now I have no clue what it's attempting to be. Kind of like Rap. Rappers use to be hard but now a lot of them wear tight pants or skirts.
5. Feels more like a Free 2 Play game with a Pay 2 Win attitude. Which I would be totally fine with if that was the case but when you asking $60+ it's not F2P. Activision's only goal here is to sell you keys. They don't care if the game is the best it could be. They know there is more than enough idiots out there willing to throw away thousands of dollars on keys to get variants.
6. Quickscope sniping is on that Black Ops 2 level. I do like quickscoping at times however I feel it does more damage than good to the overall game. I felt the way it is now in BO3 is much better for the overall good of the game.
7. Funky spawns in TDM/Kill Confirmed. Some of the funky spawns remind me of MW3 spawns. Where I'm watching the kill cam trying to figure out how did the guy appear there when I cleared that area a second ago.
8. As I'm playing the beta or waiting in a lobby for a game I can't help but debate with myself if I should buy this game or not. Will this game last more than 3 months if that. Will I even want to put the time into this game. Is this game fun? After playing the BO3 beta I was 100% sold and happy with my pre-order. This beta has left me with more questions than answers.