I have to admit, this must be the smoothest launch ever! Last night in EU, and 1 hour later (the point I went to sleep), there was 0 ping, disconnects, queues.
When the prepatch came and the game was almost unplayable in some zones I was like "shit, here we go again, when will they learn". But last night was so smooth, it almost looked like it wasn't a big deal.
Don't know how this went down for other regions/people, but this time I congratulate Blizzard.