Tsuka Shape Comparison

The lower tsuka belongs to the Shogyusha and by scrolling down one can see the overall aspect of it.
I think some improvement can be done by having a smaller curvature. At the same time, the picture shows that the second half looks narrower then the half that is closer to the Tsuba. It is my belief that the second half closer to the habaki should be wider so as to give a stronger impression to the tsuka.
Also, a less rounded kashira would increase the solidity of the look.