Now that Apple has abandoned Carbon and Rosetta, I can use Wine to play Starcraft 1 on my Mac.
http://marzzbar.wordpress.com/2012/11/06/how-to-play-classic...
Not sure how the improved driver for Mac makes this better or worse.
Battle.net is a little shakey. Make sure to follow the steps to install fonts, or it won't work at all. Also, it'll probably look really funny (textures won't load properly), but it'll be functional.