there should be an option to have your phone remind you that you have a draft message waiting to be sent. it happens to me very often that I write a response in the quick reply widget from my pulldown notification menu and I either forget to hit send or I think that I hit send and end up just swiping the entire message up which is what happens when you press send anyway. so people get very angry and sometimes break up with others because they didn't send that really important message that they thought they sent and there's no way to prove that they tried to send it so maybe if we were just simply reminded of the draft message that was unsent then the world would be a better place.
oh and maybe you could also just have an option of having all draft messages at the top??
..... just sayin