I was a pretty heavy Arma2 player when it came out, so had no issues with controls (other than the custom inventory setup). I use 6 launcher and its ok, weekly updates and Arma2 hotfixes are annoying. but what reeeeaaaallly shits me is that you have to play off-peak because all the servers are always full.
I put about 3 hours into the game without ever finding a weapon, which is frustrating, cause even an axe just triples your chance of survival. I would play it more, but you can only really play at weird hours.
IMO Dayz has just 'cashed' in on the unscripted and chaotic fun of Arma2, which is good but doesnt give the engine or game the credit it deserves.
I also dont like running into people like this (and they are out there):