I think a blockometer is a great idea
the more shots you block in a row the lower your stamina gets and the less likely you will block shots. Very cool idea. Now only if someone will listen to it.
I also think a high, med and low attack would be good and with different strengths. OR better yet, some kind of "die by the sword" weapon swinging technique (you use the numpad or joystick to control the direction and momentum of your swings).
A lady came up to me on the street and pointed to my suede jacket. "You know a cow was murdered for that jacket?" she sneered. I replied in a psychotic tone, "I didn't know there were any witnesses. Now I'll have to kill you too."