It would be a dream to have Jamie on more than one series at a time. I know it's been done before, I can't remember by who though.
Oh, it's definitely been done. I'll give you an example right in the immediate ballpark. though - Jeri Ryan! She's been a regular on BoP and yet she still turns up as Tara on Leverage
from time to time. Thing is, Tara is a hired gun who can come and go fairly easily on that show; dramaturgca
and I were discussing exactly this earlier, it's harder to keep doing that if the BoP writers want us to believe that Aiden is a regular part of Megan's life. Though I suppose they could bring him back for another limited arc.