Star Wars: The Old Republic responds to fan concerns about the unexpected server move
For example, the reason that no one was told ahead of time? The developers wanted you to log in immediately and see how your gameplay was impacted. If you’re unclear as to how that would have been tainted by knowing this was happening ahead of time, join the club. (Yes, blind trials, but customers aren’t test subjects and it arguably wouldn’t affect your overall course of action.)
Players who are experiencing particularly bad ping rates are encouraged to still send in reports about it, although how this will be addressed remains to be seen. You can read through the full answers on the official site.