I am totally not sure if this is feedback or more of a general question. . I have been trying to familiarize myself with all the meshing options available. While using Hex-dominant automatic for external flow (only CFD), I realized you can add more primitives. However, they do not seem to have any use as far as I could tell. Perhaps I am wrong and there’s an application for them or maybe that’s still in the works. It would be cool if you could use these volumes to create regions with different refinements or perhaps use it to create a funky shape for your domain (mixing different boxes/cylinders could create a different external volume which might work better for an application). I am not sure if this is already in the works but I figured I would at least point it out.
Edit: I noticed that you can do the first idea by creating an Hexa Parametric Mesh and creating Region Refinements.