Some players are more physical than others, some play with more finesse. Some are just really great all-around players. So you have to change your game.
Behind a leader there must be followers, but they should always be on the lookout for the main chance and ready to change sides if the current leader doesn’t deliver.
Always when I directed the play, I was always trying to cast people not who were necessarily like the characters, but people who I felt had the essential component that the character had, some kind of soul for it.