Its very solid, They did good!!
None.
Yay, apparently Windows 7 doesn't play well with StarCraft and Blizzard's only response is "StarCraft is not Windows 7 compatible." So far it seems like my StarCraft will forever be 1.15.2 as it cannot figure out how to install the patch.
Worked the first time I tried it.
None.
Yeah, I have no idea why it wasn't working. Every time I tried to connect to Battle.net, it would instantly download the patch and give me the "StarCraft will now restart" message, and never restart (which I assume means it never actually patched). Maybe it's because I had to run StarCraft as administrator or something. Either way it works now, so I'm good to go.
Currently Working On:
Myself

memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes memes
Question
Can it do everything I can do now while using less resources?
That depends on what you can do now.
"Parliamentary inquiry, Mr. Chairman - do we have to call the Gentleman a gentleman if he's not one?"

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
Then let me restate his question:
What can't I do with 7?
Question
Can it do everything I can do now while using less resources?
That depends on what you ARE DOING now.
FTFY.
If you're running a 64 bit system, yes. If you're running highly multithreaded applications, yes. If you're running Vista, yes.
If you have an i7, yes, etc. etc.
None.