Chalenge, that still doesn't provide any examples of "serious problems" with the 290X. Its just your opinion (man). Nothing I can use. I've read Anandtech's article, and a number of others, and I'm not seeing it.
I agree with the 4k thing, and I've said as much, if not here then
elsewhere. People don't game (serious games, not Farmville or Minecraft) at that resolution, so performance at that resolution doesn't matter. Been said already, everyone agrees, moving on. The 290X still beats the GTX 780 in performance (but no longer price) at 1080p. Where's the serious issues?
Edit: I wasn't going to even acknowledge this, but I feel I should. Your power supply reason is a bunch of FUD at best. Video cards have been drawing roughly the same amount of power for a long time now, the 290X isn't appreciably worse than anything else. The idea that it will make a bunch of people's computers break any more than any similarly priced video card is a bunch of crap that is barely even worth refuting. Yes, if you get a video card that draws more power, you might need a new power supply. Boring, old argument not specific to the 290X.