I am disappointed with a couple of things and i don't know if they are there just because it's alpha, or they are gonna be there forever.
For example, while the new additions to the movement system and the animations are great, there is still a huge problem specially walking around on the interiors of the buildings, corners, stairs and that kind of stuff are pain in the ass. Is this going to change? Maybe with the lower your weapon mod the game behaves better.
Another thing is the UI, some people says it's much better now, and it's true that they have improve it a little bit, but it's still pretty abysmal. The "space button" contextual menu is still more a problem than a solution, the inventory management it's just barely a little bit better; the F1-F12 keys functions could be implemented in much simpler ways...
I want to believe, and i hope they keep working on the design of some of this kind of aspects of the game, that at the end of the day, are incredible important.
Maybe i have nothing to worry about, maybe they already talked about this kind of stuff on their forums.
PS: Dat Stance UI mod for example, it should be there for the alpha, you really need it if you just want to play the game from a first person perspective.