What features, specs, etc would you want on your smart phone?
One thing I would like to improve is the usb port. apple 30 pin adapter> micro usb. If apples newest lightning adapter is like the old iphone/ipod one, I would want micro usb to improve to be on par with apples lightning adapter.
An improved usb connection would provide with better 3rd party accessorizes for android phones. Like the Ihome. The Ihome for iphones/ipod is awesome. I can use any ipod/iphone on my ihome. There is an ihome for android phones, but it sucks. One of the reasons is because microusb wont transfer audio signal and you have to use a aux cable.
4.5 inch screen is enough for me. 8mp camera minimum 2.0 mp front facing camera.