Well rocket screwed up bad on this, admins are not able to BAN players, using the same Arma 3 engine this tells me DAyz will probably be plagued with hackers as Dayz and Arma 2 were.
As far as Alpha is concerned, the game looks amazing - however being alpha there are no vehicles, no zombies, no loot either. But the question comes down to whether he's going to combat the hackers, its the deal breaker that will either make Dayz SA win or loose.
I will not play Dayz with hackers again, it just ruined the game when every 15 minutes someone spawns in and nukes an entire city. However there are also so many componants missing as well, Helicopter crashes, the AI should have missions - if not allowed to be added.
I enjoyed the AI missions as well as bandits/friendlies this was a unique addition to Dayz before, its rumored to be added, and should be, except for giving them a little AI would help rather then just stand there - spawn and start shooting at you.