Thanks for your explanation. I knowed both already.
However, as there are NOMAD tutorials out, employing a cube for reprojecting, these workflows seem not to be well known (does anyone even use multiresolution?.. ). We need tutorials for it! And I resist - not to post on social media… And we need standard high quality (textured) base meshes to start from. Maybe start a contest?
However, what I especially liked about my suggestion is: you could employ two different target meshes. I could imagine using one layer - like a shape key (Blender: morphing) morphing character shape. Can imagine this would be cool. But we need split display.
And by the way: this split display could be used for so many different things: separate camera positions, render settings, source mesh vs instancing on the first display etc.
Ok, it’s more a beg for split screen options (with simultaneously rotation options). And asset library, and tutorials now…