Admit it. There’s two major things you still want from OS X: multitouch support, and 4K support. 4K support would make the Retina iMac finally possible, and as for multitouch, this is where the laptop and desktop market is heading despite Steve Jobs’s protestations about “gorilla arm.”
It’s taking Apple its sweet time to deliver the above, but you don’t have to wait. Sharp has just announced OS X compatibility for their 32-inch 4K touchscreen monitor.