Should have created this topic some time ago (damn), hopefully it's not too late.
If you are playing the game right now, describe what you fear Blizzard might announce at Blizzcon / do in the next expansion that would make you unsubscribe.
If you are NOT playing the game right now, describe what you think Blizzard might announce at Blizzcon / do in the next expansion that would make you resubscribe.
Only describe things that you really think might happen, no fantastic scenarios.