sphere shapes

Hello, here is my idea for the shape of the sphere. It follows this logic:

1. it has a clear straight center line

2. all the back-front lines are completely straight

3. front tip and back tip feel different

4. front half (wide ditches) and back half (narrow ditches) feel different

5. symmetrical look!

The shape:

Refraction is an issue!! In this image the sphere is hollow:

In this one it's full of glass. Notice how the arrow gets distorted!: