When I had to use PADS against my will, layout ECO changes were cool until they vanish the next time the schemo is merged.
After changing the footprint on the fly, won't that change the part number on the BOM?
I understand that in really dense designs, a smaller footprint is needed.
Gate/pin swapping is a better approach to keep the schematic accurate across design spins.
Silkscreen clipping needs to be done in CAM. If it can be done in layout, great. But, in Cam, silkscreen clips match future design changes.