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I agree, more crews interacting in the various actual roles with their guns. Nothing worse or lazy than when (nearly) everyone is suffering from "shell-carrier" syndrome. Some field guns had a traversing spike at the end of the carriage and a crew member assigned to that station (e.g. the Putilov M1902)
Larger guns need larger crews. Ranger finder man, officer observing with binoculars, more men laying the gun, bringing up ammo, with a ram rod for cleaning or removing a mis-fired round, a seated figure to go with the limber or truck.
About one crewman for every 10mm bore size. So a 100mm gun should get about ten crewmen.
Mike Bunkermeister Creek
https://bunkermeister.blogspot.com/