Well, apart from the obvious choice of buying the rights to make The Sims: Diablo's Dollhouse, there's only one thing blizz could really be doing, and that is a brand new project.
It won't be sc2, as the two teams who originally made sc (back when they were one team) are making wow and still working on war3 patches and probably started working a bit on the exp. It won't be war3exp, it is waaaaay to soon for them to even consider announcing that (even though it's definitely going to be the next thing the war3 team do).
So all that's left is teh blizzard north team, who made the diablo, and my guess is, they don't want make another diablo game after doing effectively 3 in a row, so that just leaves something brand, spanking new!

if they'd made a number2, they probably would've fucked that up too.
The concept and gameplay was excellent for renegade, a quite unique and very fun game to play. The only problem was that westwood don't know how to make games.
It was so buggy and poorly constructed, it was more of a beta, they just rushed the thing out, i mean, come on, they added air units in a patch for christs sake!
another 4-6 months on renegade would've made it a truly great game.
but anyhow, as i said, another renegade would be fucked over too.
just look at red alert/c&c, they were great games, whereas tiberium sun/red alert2 are so disgraceful it's not even funny. :/
after red alert, westwood pretty much just tried to sell their name, pumping out as many games as quickly as they possibly could.
bleh.

Wow, those fat lazy pricks at rockstar games actually put a few more minutes time into the pc version? By the looks of things, it can't have been much more than a few minutes.

Hah, can anyone remember that old Two Towers game that was made for the Amiga but never released?
Nice little bit of trivia to know that it was actually made by a little company now known as Blizzard Entertainment.

OMG, I was looking at those World of Warcraft screenshots, and thinking "wow, that looks awesome", then I see the doom3 ones and nearly fainted. :p
THEN I thought of the system requirements for doom3 and nearly fainted again.

Doom3 and World of Warcraft are definitely the coolest things I've seen so far.

hey! don't pay out trixter's l33t camera work
well, as you may have guessed i was at the place, and i totally agree with the guy below, the single-player was totally awesome!