101domain is finally moving in the right direction. Now you can transfer domains instantly to another account. This is great news, as they've had an archaic system in place for years where internal transfers required both parties to sign and release documents before a push could be had.
Couldn't have come at a better time, as I was considering moving away many of my domains just because of this hinderance, which would have been unfortunate as a lot of their pricing is actually pretty decent, and so is their dashboard. Will have to see how streamlined a process it is.