Anyone thought about what banlist to use, or is this more of a "Free for all, but don't break the game" kinda thing? I think I'd prefer it as such, because this is by no means a competitive environment, so using a banlist catered towards it isn't ideal. 

Also, I've not seen enough 5ds to know this, do characters use different decks for Speed Duels and normal duels, or do they just use a speed duel version of their regular deck?