[mrob]

Those video flaws are not important, as proven by the existence of the PlayChoice-10, an arcade machine which played NES games with high quality RGB video.

https://en.wikipedia.org/wiki/PlayChoice-10

[vanadium]

Or the NESRGB project, for that matter (which I'm installing into my Famicom Twin): http://etim.net.au/nesrgb/installation-famicomtwin/