One thing you Devs may want to start thinking about now.
Once AO hits steam the initial influx of players is going to be very massive (I've seen this first hand on other "f2p" games hitting steam).
A fair estimate is 3-4 million players trying it over the first month. With just one server a load of that size will obviously be a big issue. I'd suggest getting plans inplace for what could happen in that circumstance.
TLDR; Get your crash pants ready..