After many versions of Rhino, it would be a welcome addition to introducing a variable ChamferEdge. After selecting edges, you can activate edit points (yellow squares), which, interactively, could be moved to define the desired inclination of the chamfer.
Additionally, it would be advisable to introduce a option chamfer path type linear (not just a chamfer path curved).
I know, it’s easy to say, not to be done, but it’s always an idea to keep in mind!