A commercial Linux alternative focussed at desktops with appropriate support for commercial software and an easy transition path for users coming from the Mac would be great.
Speaking of hardware: I recently got a Lenovo for Linux testing. Multi-touch trackpad frequently stops working after standby. Boot time and wake-up time is a lot worse than on my MacBooks. Sometimes it doesn't wake up and needs a cold reboot when I open up the lid. I never experienced any of those issues on my Macs. Not even in 2006.