I have been using a bunch of other node based tools over the past few weeks and have found a lot of them have the ability to control the connections between nodes. The most useful is being able to control how the connection flows from and around states.
For example you can click the connection in (Miro/Realtimeboards) and then move the little handle left or right to move the connection.
I realize this might be one for the really hard basket, but thought I'd bring it up as it would make Playmaker even better.