Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel.
The clunk noise from brakes could be engineered away by using stainless steel spring clips to prevent the pads being able to wiggle around in the calipers (used by many manufacturers already).
The clunk from the contactors opening/closing could be engineered away by having the contactors open/close far slower - with a proper precharge, no current is flowing, so there is no longevity benefit of fast close/open. Or... decide not to have contactors at all - I don't really see any reason they're needed, just keep the high voltage system always energized and design all the other components to have a suitably low leakage current. For maintenance and emergency de-energization, have a manual lever or a pyro-fuse.