Alrighty, first things first:
I love my GS3, I really do. It's a universal step up from my Nokia N81 GB which got to a deviating state (Screen turns white if I slide it and can only be turned back to normal by restarting the phone ... and the viruses that phone carried).
That said, it has a couple of problems that I would like to see fixed through future updates if possible:
1) TouchWiz: This is a pretty cool looking theme, but it's not as practical as I found the stock ICS theme to be. As a result I ended up downloading Go Launcher EX and using the stock ICS theme they offer. In addition, TouchWiz is when sliding between the screen menus. It's laggy when leaving a big app (Game or such). If Samsung wants me to use it, they will have to do better.
2) The screen rotation: It's annoying. It just is ... I have to keep it turned off at most times. Problem 3 continues this:
3) The Video Player/Youtube App: It doesn't auto-rotate. The videoplayer can only rotate to the one side if you don't have the "Auto-rotation" option on. Youtube doesn't rotate at all ... AND there is no "enlarge" button for the video. So unless you have the option of rotation on you won't get a full screen.
4) S-Voice: Whether it's my accent (English is not my first langauge) I don't know, but it just doesn't seem to recognize 98% of what I say.
5) Auto-brightness: It feels like in certain apps the brightness is way too low and it might turn higher for few seconds before turning back low.
6) The default browser: It feels generic, it crashes quiet often.
7) Certain apps seems to not work with the GS3 because of certain things in the GS3 itself. An example is the App2SD.e
I know I have more complaints, but the device is pretty damn good. Either Samsung can find a way to solve these problems or I will just have to work around them: I ain't getting rid of this phone any time soon