I wonder if CPU demand can be very different between SP and MP and if this might not influence frame rates.

In an SP campaign the AI must control every enemy unit. Imagine facing 4 Hojo full stacks with huge units! That’s 80 units the CPU must continuously make decisions for. Very demanding.

In an MP fight where a person controls every unit, the AI is taking far fewer CPU cycles to decide what to do. It must still control each soldier but the AI is relieved of “big picture” logic. So might it not be easier for TW games to deal with large MP battles than with SP battles, connection issues aside?

In any event, yes, options for how reinforcements are handled in both MP and SP will be welcome. Options, options. You can’t have too many IMO.