Final Fantasy XIV Database - Ffxivpro.com

I know for a fact that when patches come out, FFXI splits the patch between the platforms, so each system has a different patch. So my question is, why can't PC players play on an "HQ" patch and leave the normal patches for the other systems?

I'm not asking for content that only PC players could specifically have, but better graphics and possibly nifty features that would change how we view the game or how we play it, and not particularly playing the game itself.