I'd be more than willing to be the GM for duels, but, given that there could very easily be a lot of them, it could be a little tricky to keep up with them, hence why I would like a co-GM for this, to act as essentially a second me.
I'll do my best though. I'll make sure every card in a person's deck gets a number, and that they don't get the same hand every time.
The problem being, of course, that brick hands are still a big issue, which is why KO's RP is something I myself am a fan of, since he foregoes that bit entirely, but makes sure nobody plays anything like Exodia Turbo, Final Countdown stall, etc.
Depends on the general consensus, really. I'll still look over everyone's deck to make sure they're not being super cheeky, but I'd like to hear how people think draws should be handled. i.e. You pick your hand or the Random Number Gods pick it. Pretty sure most would say the latter, but I'm just making sure.