Yeah I'm thinking, what shifty guys/gals are at liberty for a new series, and have name recognition with SyFy viewers? Not just from SyFy series, but any series the average SyFy viewer is likely to have seen, especially anything genre.
Titus Welliver is an example. David Straitharn's series has been cancelled. I don't think either have been cast in a pilot this season and speaking of that, there are plenty of actors whose pilots will be rejected in May.
It's a buyer's market for actors over the age of 35 or so (sadly) but a lot of them have followings who will check out a show because, hey that guy is in it!