An additional element to the “dial not switch” train of thought.
your 26 man roster is dynamic. The mix of skills shifts as the season progresses. Injuries and ineffectiveness are going to ebb and flow. It’s an eventuality.
the more plan A relies on platooning, the harder it is to maintain the correct portfolio of skills. Not only do you need a backup RF, but you need one that offers both sides of the platoon split. The more you platoon, the more you are forced to platoon.
the more diverse your product portfolio, the more SKUs you need to support. The more SKUs the more overhead to manage. The roster is limited to 26 active, 40 total, portfolio is getting bigger than the overhead can manage, and is cannibalizing sales.