I think it would be helpfull to have a script that allows us to select faces (triangles/quads) regarding to angle between them, specified by user.
Sometimes I import geometry from CAAD’s to Blender and get helly mess of triangles - simply “convert to quads” doesn’t care about angles and sometimes joins two tris in the corner. It should be easy to tweak by hand, but if a scene had hundred thousands of verts, it would become impossible to check everything…
