I'm hugely impressed with this monitor, the Picture quality on it is excellent, the only slight complaint most people have had with this monitor is some minor backlight bleeding in the lower left corner, this is there on my screen when I looked for it but in all honesty I haven't really noticed it in normal use.
Improvements a height adjustable stand would be nice, as you can see from the pic above I built a monitor shelf into my desk a long time ago and it sites perfectly on there.
It could do with being cheaper, but that will happen anyway.
A few more games need to give you full FoV control, non FPS games are very good at this which is nice and some games just look weird, Worms for example has extra menus visible at the sides of the screen that would not normally be seen on a 16:9 monitor.
I'm really hoping that GTA V will work right in 21:9