Lol Alan Ball. Could you have picked a writer with less sci fi writing experience? You exec produce one show with one scene someone likes and you are in the running for fantasy remake ideas
J. Michael Straczynski, Ronald D Moore or if you want to go very well known writers Whedon or Abrams would be awesome choices to speculate as having the chops to make this first class amazing.
JMS would be my personal fantasy choice, though in 2014 sci fi fans are going to get the awesome show they deserve called Sense8 from him and the Wachowski brothers so we just need Defiance to be good enough for a year