Yeah, it would be a workaround for some cases but not all. It would work in the case of a desktop system where the monitors are always plugged in, and it would work for the case where the monitors go through some kind of USB-C dock (assuming it's possible), but not in your case.

You wouldn't use the "which port was it in last" fallback option unless you already had multiple saved entries where every other bit of data matched.

Not as convenient but you could label them, if the port was actually factored in.