I get the logic, but it makes people in cars panic, and that's never a safe thing either.

When on the road, I choose to just stay in gear with the clutch in at stops, and I always stop in a spot where I can quickly pop out of should I need to. Sometimes that means I need to be on a bit of an angle or whatever, but my first thoughts pulling up to a red light are: wheres the path of escape should I need it, and what's behind me and do they see me.