Seems my point 3 above gave the impression it would have to be one way or another for technical reasons. For this I apologize! When I was writing out that post, I was thinking about the point @murph3699 made and mulling over how 2 C slots allow teams to game that slot and only roster Cs for half the season in current season-long formats. So, I was just thinking “maybe I should rip off this band-aid completely”.
I am leaning towards 1 C for H2H and 2 C for season-long formats (roto/points), because in the last couple of hours I’ve gotten less annoyed about gaming 2 C slots.