I can support that request and extend the requirements:
A customer had to review a board that led into a re-assigning of two pins. Since both versions of the pcb where out in the field the updating became a bit tough although the PSoC "knew" on which board it was seated (versioning). Something like a "Dynamic Associated Pin" like in the Software Transmit UART could have helped him out.
Using different development kits all the time and pcb's in a prototype stage with LEDs and switches on different pins doesn't make life easy. I would be glad about some help to build a dependancy between a pin-assignment and a project source.
Actually a further request is that a sortable "view" of pins in table form where all key
pin parameters listed for each pin.
I've passed the feedback onto the development team.