Thank you for your prompt and informative reply.
I see your point in the "feature creep", especially with the competition restrictions. My wish was more in the category of "if it's possible", and with your justifications, I completely see why you decided not to do that.
Also, very big thank you for looking into the Grid Pix DLC, I eagerly await for the chance to play more of it. The original game was pretty much perfect, and getting the same goodiness is definetely welcome :-)
Have a nice weekend!