Arena Team, Who Does the Third Wheel Support?

Since Arena teams are generally made of 3 people due to the bonus hero, and the support system requires a pair, well you can do the maths, there will always be a third wheel in these scenarios.

So the question is, who do you guys plan to pair our unfortunate friend A with (other than yourself of course)? One of the Askrans? A common bonus? The fourth member that gets replaced by the bonus? Or just not bother?