Same here, but if you look them through you may find that you have many redundant doffs that are hopefully not bound yet to you and will net you a lot of EC. I would aways try to keep my active roster below 200. That still leaves you 10 doffs per assignment slot on average.
But I've become attached so some of them. Like the white doff named Sisko, or one who has the same first name as one of my ex-girlfriends.
Yea, I know I'm weird.
Are you nice to the ex girlfriend or do you constantly send her on high danger missions?