I am of course in too, but 128 players? Ambitious! If you manage to pull this off, you really should get a race-mode named after you
I would be all for keeping the 7 races from the Avalon Cup. IMO it's enough races to rule out any accidents/coincidences/luck etc. 7 races is also relatively fast to get done, the ~20 minutes it takes is a lot easier to arrange than having to invest 1-2 hours into each meeting (disregarding the triboy/DJT marathon). With 64 matches in the first round, you'll want something that's super easy to set up. As the tournament progresses, then maybe increase the number of races?
Edit: Oh... Saturn wrote pretty much the same, just much better. I'm with Sat![]()