#2408 GC banners: don't alternate between generic text and actual banner.

[Amyn]

On the channel grid, GC banners have that text "nintendo gamecube" with the GC icon alternating with the actual game picture banner.

It takes around 3 seconds to alternate and it can slow down the process of visually choosing or searching for a game.

I think a solution to this would be
- an overlay with just the GC icon, or
- the same current visuals but with a transparency that would still reveal the picture, or
- any other quicker solution that doesn't hide the picture, like not showing that GC text/icon at all.