I'm still hoping that Derek will make a return in the next Crisi-level event that Snyder is brewing. I mean, he has all the check-list for that :
- His life was changed by the events of Metal, which led to the Source Wall being broken
- He can travel through places and dimensions, even to the Dark Multiverse
- He's friend with Dark Multiverse versions of Superman's supporting cast and a travelling Superman
- He's stumbled upon an evil company who wants to harness the energy of the Dark Multiverse and possibly as its eyes on the Source Wall energy
- He's friend with one of the successors of the Monitors
- He's been a temporary member of the Seven Soldiers of Mystery
Honestly, if it isn't enough to warrant at least a small role in the next crisis and then a relaunch, I don't know what is.