If you want a master based homing method that pays attention to the rising and falling edges of a switch I’d recommend you look at using Methods 123-130. For those you would need to use the Home input and not a positive or negative limit. It seems like this would capture the behavior you desire though.
As per the diagrams on our website, we expect a positive/negative limit switch to remain high till the physical end of travel. It is very important that we maintain consistent behavior for our other existing customers. This is why we have both the “legacy” and “improved” homing methods. The change you are requesting would be pretty extensive to the back end of our homing methods and require a third set of duplicate behaviors that differ significantly from the DS402 standard methods.