The problem with Singer is that he always seemed to get way to easily sidetracked by other more "important" projects - always getting distracted by the next new shiny bauble. I can understand putting BSG on the back-burner for something like X-Men, but then came "The Munsters" reboot of all bloody things, for which BSG was shelved once again, and was subsequently axed. And based on his recent "treatment" of the Superman franchise, I'm not entirely sure that I trust his judgment any more to do a good BSG project if those are his priorities.
I actually wouldn't mind if BSG continued for another 20+ year hiatus if it meant keeping him away from the project in favor of someone else who would treat it with greater respect. My only exception to that is if they could also get DeSanto to come back as well, as he seemed to be a good balancing factor to Singer's flakiness. Things actually seemed to get done when he was there too, back in 2000.