Is it jsut me or does that video seem pretty "finalized" The artwork, the setting, the interactions etc etc... Everything I have seen of this game makes me think it may be further along that we expect?
SC2 has plenty of polish, and hasn't crashed on me once. The mustard yellow effect for several seconds after alt-tabbing every now and then has been the worst, and that doesn't affect game play at all. I'm thinking maybe Blizzard learned a thing or two, especially since their games tend to have long tails (places like Walmart and Target, that have to move SKUs, still sell the battle chests, FI). A truly polished, stable game, on first release, could mean much more than having the most original game play, fanciest graphics, and so on (I stopped playing SC because I got a 1050px high LCD monitor, so all of the "it's just SC in 3D" complaints are OK by me!). They don't need to rush it, as much as they need to make it good enough that you (generic 'you', not specifically 'you')
must have it, when they finally get it out.
Though, I doubt they'll
ever have a really great Bnet game finding interface. I don't know what it is, but they seem to be averse to that. IE, filter by types of players, open quests, classes already in-game, bosses still alive, what-have you.
I also hope they don't split it. With SC2, it's not bad, as I still haven't finished the SP (I'm not stopping until I get all objectives on hard, and can reflexively do all keyboard shortcuts), and there's plenty of content for a full SP game (IE, after playing, the 1/3 of a game argument holds little water--they're still greedy, fine, but it's as much of a SP game as any, for the money). But, with D3, they'll really need to include enough in the main release, so that whatever's left can be expanded into, well, and expansion. With SC, each game is 100% unique, and short. With D3, the character grows, and you go through the same game as the SP in MP, so they need plenty of SP/coop content.