As title says, I was curious on this one.
Last MMO I played regularly, was The Secret World, and it had one international server. I was leading a international guild for it, though I noted as time went on, the EU side of things dropped in general, and that impacted my membership in that timezone. Being English myself, I never saw a great deal of activity, until unsociable hours too often, and was part of the reason I closed it down. I have also played in guilds in US timezones, and found once again the issue of activity times was quite a barrier, no matter how hard I tried to overcome it.
This is my primary reason to stick to EU zones for my own timezone, though I may play with my friends on the US servers time to time.
I noted in another thread, people from EU were choosing to play on US timezones, and was curious about the reasons given. I certainly know it is not all negativity, and there are many positives too. Such as the higher populations sometimes even in off peak times.
So what are people for EU's plans, for ESO?