SE, just keep moving forward.
At this point, just keep pushing forward. You're going to have people picking apart every little thing you do or don't do. Since the number of people playing already exceeds the anticipated amount, a few lost subs is going to mean nothing in the long run.
Besides these server issues, the rest of the game feels solid and it should be an understood fact that these things will be taken care of at some point very soon. Some who threaten to quit will, some won't and some just don't care and are waiting for the fix. Regardless, we have a good game on our hands.
If you feel the need to appeal to the upset vocal mass, feel free, but you also have a good portion of players that are patiently waiting and eagerly anticipating the time when I can log in again.
Best of luck.