whats the point of internet?
apart from for a 4k demo 'stub' to secretly download more content?
keep it simple and in line with how things already work in the demoscene.
category 1) no overclocking, any card image you like under 2gig, no internet.
category 2) WILD. whatever you like, overclock the nuts off it, 128gig cards, internet, web cam, kinect etc.
and as someone said, later 4k, 64k if it takes off.
if you want to know more about the demoscene check this out - brand new documentary about the history of the demoscene, its partly focused on the hungarian scene but it really good and most of it doesn't need subtitles.
http://www.youtube.com/watch?v=iRkZcTg1 ... r_embedded
or as a 1.8gig mkv with subtitles > http://vakondok.com/film/moleman2/Molem ... B_720p.zip