I have a great SF story I would like to write...
It is a satire, mostly... one that explains quantum physics and the state of the world and the insane US politics of the past 6 years. Unfortunately it would be quite long, and would require a better writer than myself...
So far, the longest story I have written is this one- which was written more or less in a stream of consciousness, and has many issues... the one I have in mind would require very meticulous planning and lots of dialogue- which I suck at.