[solipsist]

MRU order works fairly well, although it's definitely not ideal. With the iPhone I feel that it lacks even more than it does with the computer. That's because of the fewer apps you can see on the screen at a given time when you're using fast app-switching. And since we usually have more apps open on our iPhones than our computers (because one has a "Quit" feature while the other doesn't), it becomes increasingly frustrating. MRU works great until your workflow starts to become more complicated and when the number of apps in the tray start to build up.