How about chill the hell down.
Mac's aren't exactly Gaming computers... And the ones that are of decent to good+ quality to *MAKE* games on, aren't specifically "cheap" either.
If you want a Mac version any quicker than it comes which may not be for quite some time still, if you're lucky... Then A) buy them a(several) high quality Macs and B) hire them some additional workers to convert the game over to Mac.
And you'll need to get high-quality workers as well as pay them enough to not burden/sass or otherwise impede Dasius's interest or work on the game.