Meeper that is a very classy installation. Did you remove the seat rails like they did to make the vinyl fit ?
I went for carpet which was about half a days work to cut and fit but I needed it to go up the sides of the interior as well by about 18 inches. Not a week passes without there being a dirty bicycle, engine, hikers, footballers or rugby players in the rear so for me maximising the protection was essential on a lease car.
My contribution to enhancements, is that I am making myself some heavy duty tie downs that fit into the floor rails to safely secure heavy loads. Its a long and complicated job with much trial and error (I am no engineer) but I am nearly there now. I don't trust the standard tie downs which are no more than a bit of bent wire.