On one hand we need another iPhone 5 thread like we need extra holes in our heads, but let's face it: what else will we do during the next 5 days? Work? So instead of "will you upgrade if there's no iPhone 5?" I want to know which one or two features are absolutely essential for you to consider an upgrade from whatever you're carrying now, or would make you choose the new handset over the current iPhone 4. This list is based on my understanding of the latest rumors.