Why no regional servers?

[Kaedan]

Two tenths of a second can be a lot when you are constantly uploading and downloading data, just saying. I always had latency issues in FFXI and FFXIV when in area with 20 or more people. It is definitely playable and it doesn't bother me all that bad but it would be nice to be able to do away with some of that if it was ever an option.

That's not latency... that's the limits of your internet connection. Latency is just the delay it takes to communicate the distance between your computer and a server (literally the time it takes for the electrons to travel that distance). The problem you were having there is that your internet connection wasn't good enough to handle the large stream of info coming (trying to shove too many electrons down the pipe at once). Nothing to do with latency.