They should include a usable server browser, one that does not send you back to the start screen when you cancel joining, one that does not scroll to the top when you add a server to the favorites, one that has actual alphanumeric name sorting, ...
I imagine a spamming fest of flashbang grenades... :-p
But by the way, this is just a work in progress (not even oficial). There is some weird things with the animations(especially when the characther does that backflip when he dies, LOL), and for some reason the man which made the videos, didn't show the Benelli. Maybe the Benelli wasn't implemented yet in that build.
Glad to see, they are reworking some maps, especially Tombs!