First off all that I'm not a big star craft player.
I love the campaigns in the SC games and I loved the 2 campaigns in SC2.
But I would invite you guys to just download dota2 even if you have no interest in actually playing it and just tune in to a tournament (The International that's going on at this very moment is a great way to jump in).
Dota-tv: the in-game client that lets you watch the actual match while it's going on (with a delay to prevent cheating) is just light years ahead of what Blizzard is offering;
- Select between different casters in game. Casters can draw on the map to point out some interesting plays/facts.
- Select camera control: Player perspective (yes this works flawlessly), Commentator controlled camera, Free look (you control it), Directed camera (the game follows the action)
- Chat enabled in either the dota-tv chat channel or any of the chat channels you joined (like for example the Neogaf chat channel where we all discuss the progress of the game)
- See live stats: Kills/deaths/assists, gold/xp graphs, items being bought by players, facts being shown by the commentators, player networth (who's the "fattest" player in the game at the moment) etc.
And did I mention it's smooth as hell?
Blizzard just missed out IMO...