For hardware I would like to see more manufactures used more premium materials to build their phones. Yes this is pointed toward Samsung, especially their flagships. If you have had the chance to use a Moto X, it's a plastic phone but the way its built gives it a great premium feel to it. Another is battery life. When i had an iPhone 5(with its 1440 mAh battery) was easily to last me all day vs my Galaxy Nexus(with the extended battery at 2100 mAh) struggles to stay alive for 6-8 hours. Yes hardware and software play a role in this but this is something that needs to improve. I'm interested into what you guys would like to see improve in android.