From my view, seeded allows people to plot permutations of where there'll end up, which can create some interesting outlooks, and also provides higher seeds with 'easier' draws (in theory), thus rewarding them for their efforts to get high up the table. Random means then that people can't game the system (as I've seen it happen before) and also has the benefit of being potentially madcap
Thoughts from a group of fellow mental competition geeks?
