Eh, fighters are capable of dropping 6d12+96 damage at level 10. Assuming a 60 percent hit rate they’re dropping an average of 90 damage, and a max of 168. They aren’t underpowered, they’re just forced into GWM/Sharpshooter and they don’t get magical defenses without help. Which are big mechanical problems but not really power issues.
Martials are already underpowered enough without forcing them to give up even more of their meagre power.
You call taking 7 attack actions in a turn “underpowered”?
Eh, fighters are capable of dropping 6d12+96 damage at level 10. Assuming a 60 percent hit rate they’re dropping an average of 90 damage, and a max of 168. They aren’t underpowered, they’re just forced into GWM/Sharpshooter and they don’t get magical defenses without help. Which are big mechanical problems but not really power issues.