It would be nice if there would be more Options for the different shapes.
I think for building it would be nice to generate some kind of "egg" shape by squishing or streching diffrerent Axis via a "Radius" option.
One example: X-Axis: 25 Blocks Radius
Y-Axis: 10 Blocks Radius
Z-Axis: 50 Blocks Radius
With this addition it would be easy to build a Zeppelin or a Hole for a base or something like that.