I would actually be OK with one more BSG actor being cast. I think Tricia has the potential to a good Morgana. But any more than two actors and lines start becoming blurred. And Tricia, for instance, had very little screen time with Jamie. Now, I know I'll raise the ire of some, but I would not want to see Katee cast on the show because people's minds will go to Lee and Kara. Casting Eddie or Mary would also may be a mistake.
One of my problems with Caprica was they cast so many people from BSG, even if they were only supporting players on BSG, that it became a distraction. And then to be told, 'Oh, no, they are no relation to the other characters they played. Their casting doesn't mean anything.', was problematic given what we knew of the BSG universe.
So, yes, I hope Ron shows restraint in casting actors he has already worked with.