Well I was thinking is the rotor face really optimal for transferring power to the eccentric shaft?
The direction of the chamber face is very planer with the rotor itself, could it benefit from perhaps a design that would not incorporated a evenly distributed recess across the face, but more of a pocket to the rotational side causing more force in the direction the rotor is spinning.
What would be the biggest problems with something that could utilize more of the pressure and force at a further distance from the rotation point from the combustion process in a rotary?

Avoiding the obvious issues with manufacturing such a thing.

What are the reasons that the rotors are not shaped in a way that promoted more distance from the force?

Are there any spark issues?
Any balancing issues?
Any other issues assuming that the compression ratio was kept constant.
I can think of a million little things that could make it a problem, but those things could be ironed out, kind of like the tendency of carbon to want to build up in the pocket, things like that.

Anyway give me an idea what you think would be a problem and what you think this could do to benefit if at all the way a rotary works.

 

I think the reason they never done that, was purely because of cost. It would have to be machined if they were to ensure a constant size. (a bowl is MUCH easier to keep constant). If it was done to all the faces, it shouldn't affect the balance though.

not sure if you even gain anything from it though, at most you'd probably gain 2lbs of torque - if it was on a 13b turbo.