I'm jumping into this one and saying that the latency issue is a very important issue for me. I am from the USA, but I play on EU data centers because that's where my MMORPG gaming friends are, and have been ever since FFXI. That being said, I can sometimes have very bad delays that I never had while playing other mmorpgs, such as WoW, Rift, or even FFXI... so as someone location-challenged fixing the latency to be any lesser than 120 ping would be amazing...

That being said, I do realize that has more to do where I choose to play... but ya know... any improvements would be good improvements. Surely they have to realize fixing the ping issue even slightly would have massive benefits for nearly everyone.