Command Tab is irrelevant. Mac's philosophy of seamless integration and no unnecessary steps is the reason it's products are so seamlessly designed. Having to command tab to see what's running is the windows equivalent of 'Are you sure you want to run this' that we were poking at when Vista first launched.
Not that it matters. It's probably just a build step. I'm sure something better is in the pipeline.
Command Tab is irrelevant? Lol. You do not need to see your running apps at all time. It's not any different than pressing the home button twice on iOS. You'll get over it, buddy.