I'm not sure how anyone can really defend Microsoft on this one. This thread has already had real world scenraios where a console can get knocked or moved. On top of that there're plenty of real world scenarios where it's more convenient to move a console whilst it's on. If you've taken a console to a friends and need to move the console whilst in the middle of a game, you're not going to want to stop that game just to move the console.
MS already fixed the problem in previous models so why on Earth is it back on a re-design? A re-design is supposed to be superior! And the R&D to fix this problem has been done and the estimated cost is $0.03 per console. So wtf happened to this model?