I'll wait for a "StarCraft II Battle Chest."
This.
I'm not horrified at the idea of losing LAN support - provided they can get some way of allowing low-ping for tournaments (the idea of even four or more players using anything less than a T3 connection is rather... yuck...)
But if they don't... well, Starcraft II won't become the long-lasting hit that Starcraft was.
...
I don't like the idea of having to buy three games to complete one, however. Yeah, yeah, I know... each game is the single player campaign for one race... great. It better be a bloody long campaign, then. In the order of 30 missions, as that would get close to how long Starcraft was. Unless they play to sell it for $25... or less.
I'm probably not going to bother buying Half-Life 2: Episode 3 as I just can't be bothered with episodic content that takes years to arrive. That new Sam & Max game... maybe. Because the episodes came fairly quickly.