Before you get too excited about TAT, also take a look at SPB Mobile Shell. They are working on an Android version currently. Hopefully, these two home-replacement apps are just a glimpse of these to come.
SPB Mobile Shell is a great application, I had it on my Touch Pro winmo device worked like a charm can't wait for it to get sent to android so I can start using it again. Tat home I signed up for waiting it looks fun to test and mess around with.