I believe the problem is more general: touchscreen interfaces would benefit greatly from a wild redesign study. Why does the Android menu pull down from the top

I believe the problem is more general: touchscreen interfaces would benefit greatly from a wild redesign study. Why does the Android menu pull down from the top? Why does Firefox mobile lay tabs at the top of the screen? Why do apps and websites put menu icons at the top? When I had a <4" screen it worked fine, but on a larger phone I reposition my hand every time I reach above the top 3/4. That's for every unfortunately located app, every X box, every page reload, every notification, every search query, and so on.