Champions
I'm familiar with, and always enjoyed, the Champions game system which allowed the melee fighters a wide variety of choices each round. You could punch, do a haymaker (big windup hit for a bunch of extra damage, sacrifice defense), throw, grapple, abort your offensive action to dodge, etc. You also could use some of your skill (combat skills) to either offense, defense, or damage. Then when you continued to gain more skills, you could take a "fighting style" which would allow you even more options, including martial throws, defensive strikes, offensive strikes, and special attacks such as killing strikes, nerve pinches, and strangle-holds. These were good examples of choices, which in combination with per encounter and per day abilities, would make for an interesting strategy in a combat.