all the 24"+ LG IPS panels had color uniformity issues (left would tint red, right would tint blue) for the first couple years of production. this was so problematic that NEC and eizo had to add screen-region-based color correction LUTs to their pro line to get the kind of uniformity they had been getting with previous panels.
backlight uniformity on some grades of panel (ie, the grade that everyone as cheap or cheaper than dell used) has also been suspect. admittedly, the 27" line of panels has not been bad, but the LED version being used in this monitor is a pretty new panel, and doesn't have the most amazing track record in the US so far (there seems to have been a bad batch of zr2740ws, mine included). further, for 260$ retail in korea, they're probably using pretty low-grade panels...
again, i'm personally all for taking a wait-and-see, but that's at least in part because i'm not entirely sure where i'd put another panel on my desk...
ps, it's not super easy to swap in driving electronics. power supplies yes, everything else no.