I've probably logged more hours into Starcraft II than the rest of my games combined over the last 3 years. I got to Masters in ranked ladder at one point, but yes, the rage quits are strong with this one. There's something about building up my forces for 20 minutes and then losing it all in seconds that really irks me. Due to this, I ended up quitting the ladder season and switching over to some Arcade communities.
Legacy of the Void looks pretty sweet! As a Protoss player I'm really looking forward to playing through the campaign. Archon mode looks very entertaining as well, although I tried playing it with a friend (I have a beta key) and it was very difficult. The opponents had way more games played together than we did though.