Yeah, we run images and GPOs. We've killed auto-run (which I don't miss a bit) and use it to push out updates. If the Metro screen can be squashed, I'm sure we will. But we have no say over student laptops, so if a student shows up with a problem related to Metro, I'll still need to know how to fix it.
A new 27" iMac with an i7 and 16GB RAM is coming available in a few weeks. I may snatch that one for myself just to work more in Mac in my office. I dropped a 512GB SSD in my MBP and it's a sweet machine now. I may do the same with the iMac.
"I know rocks. Rocks are hard."