Hollow option for primitives?

Could it be an good idea to have an option for hollow and thickness when adding primitives?

If we are to create - for an example - a helmet, i would create a sphere, then copy, scale a bit, then subtract using the vertex merge option. But an option to create the objects hollow from the start could be useful. What does others think?

I was about asking almost same request. Just combined with half sphere for quick bowl creation.
Just two slicer, from top and or bottom to cut primitive open to see inside.

Half Sphere is most important as not easy, especially to create a low poly bowl. But would come in handy for cube and cylinder as well. Maybe also for cone.