Hello. There are quite a lot discussions regarding Steam for Mac, and I have decided to put most notable suggestions here, in one post: - Notification centre support - Make traffic lights OS X 10.7+ like, plus they should respect graphite appearance - Shortcuts [CMD+W/H] should be working properly, according to OS X logic - Full retina support - Multitouch gestures - Reduce idle CPU usage (I mean Skype is always close to 0 for me when idle) - Fix occasional crashes
Ideally support for legacy OS X should be dropped and cocoa framework used instead. Most modern software requires 10.6+ or even 10.7+ anyway. Also, according to Steam hardware survey the amount of 10.5 users is so minor, its not even showed there.