I'm not sure something like this can be co-ordinated at all, but I'll suggest it anyway.
The idea here is to host an MtG tournament sometime in the future on Virtual Playtable, with a non-participant as the judge and organiser. The decklist of each participant would be posted on the official tournament discussion (if it's happening at all). For this to work, we need:
i) People to participate
ii) A well organised system
iii) Some sort of rank system on the forum (optional, but would be excellent)
If anyone has any thoughts about this, go ahead and post it here!