Still, staring at a PCB all the time, unless you were to have something along the lines of an aftermarket GPU cooler or a water block on it, looks awful.
I personally don't spend much time staring at the PCB's in my computer, but I agree, the PCB side of a video card is not its best side, especially since once it's installed, you never see the nice artwork on the shroud again.
Here is something you could do. Measure the visible area of the PCB and cut a piece of some rigid, non-conductive material like plastic and trick it out with some cool artwork and attach it to the PCB with some adhesive spacers so the cover doesn't touch anything. That should help the appearance a lot.