Truth be told, I've never played in a sequential pitboss. However I do believe exactly this is the case. In online games with sequential turns production/science/growth, etc happens for all the players at the same time when the turn switches, just like this is the case with simultaneous pitbosses, so I believe this will be the case with sequential pitboss too. Maybe someone with experience can correct me if I am wrong. But even this does not cover all the advantages/disadvantages of being first/second mover. The one who is moving first will still be able to promote and attack before the second mover can do anything in this regard. This link shows a hypothetical way of dealing with some of the advantages/disadvantages of being first/second mover, but it does not list those. I though if we have something like complete list of advantages/disadvantages of being first/second mover we can see if those can be compared in strength and if found somewhat equal, then we can just leave it unregulated as we all agreed that rules about this can be very hard to create/control/enforce.