I didn't have a huge problem with the upgrade system, but I didn't really feel like it added anything worthwhile to the game either. I guess it was nice to have something else to spend valor on, but I think I prefer upgrading by getting entirely new pieces of gear.
I also like to have times in WoW when I can feel like I'm "done" with gearing for a while. The upgrade system seemed to be designed to keep people logging in every day to do dailies/dungeons/LFR, but I decided to ignore them to keep from burning out.
Keep it. Remove the 1000 valor cap. It's awful.
I prefer this over them dumbing down content. Gives you a advantage for the next tier aswell. If this wasn't the valor dump there should atleast be Valor BoE for extra gold for those who got enough gear.
"When you want to succeed as bad as you want to breathe, then you'll be successful"
Valor upgrades were fine. Conquests upgrades, however, were not. I suspect Conquest upgrades is one of the main reasons they removed item upgrades.
Think about the upgrades as a "small way" to nerf the content by yourself (getting some more stats "easily" = making content a bit easier). I like when actual content is almost done and you dont have too much to do with Valor points.
Considering that Blizzard said upgrades were brought in as a way to help a raid group get that little bit extra dps and healing to help push past a difficult boss but then they have nerfed content anyway, I don't really see the need for them. So my vote is for stay gone.
As long as the upgrade system stays for Valor/Justice only, sure. All it did in PvP was increase the already substantial difference between a T2 player and a Honor player.
"Reason is not automatic. Those who deny it cannot be conquered by it." - Ayn Rand
I liked it just because it was something to spend valor on, the only times I capped valor was before I was geared, and during that earn 6000 valor part of the legendary quest, after that I really haven't bothered capping.
Waaaaah this guy was mean to me! Waaaaaaaaah!
I'm mean because you're stupid.
I get the impression that its still debatable that the upgrade option will come back. For myself I haven't minded it to much, but I am just a dungeon hero and ignore things that I don't feel like doing. I did look at my options for upgrade the other day and found that many of my dps pieces were only going to give me armor upgrades. Takes the pressure off of upgrading everything when some items don't offer a clear advantage.
I guess I'm saying I liked being able to upgrade weapons, but it did not seem like a must have for me.