Perhaps by way of finding some kind of common ground here, I would suggest that maybe we consider having a Senate rotation and a fifth slot. Rather than having all of them, perhaps we could rotate through the groups.
I can state with assurance that we do not have a New Democratic senator, although maybe some are close. We certainly do not officially have a New Democratic senator.
Maybe one way to find common ground between the two alternatives would be to provide slot “e”, where we could have a rotation through senators. That could be determined by the senators, notwithstanding the fact of having to exclude somebody in a way that wouldn't allow them to participate. It would be my suggestion that there are probably Liberal-leaning senators, and there are probably other senators who tend to lean in different partisan ways.
That would be my suggestion as perhaps a way forward to find that common ground.