This whole thread makes me wonder are all those thing gamedev related? Because support loops are big NO in game dev usually. How would you do LODs with those support loops ? Aren't hard /split edges and normal maps been invented to fix all this and editing vertex normals is a way to fix unwanted shading gradients on…
Well, I did use subdiv modelling in the past but once Zbrush got sub-projection slider in its dynamesh and a density picker I gradually stopped to do subdivids at all. Then a few years later I stopped to do hi res models for hard surface things too mostly because of rounding corners shaders + adding details straight inside…