not all exodia decks take the fun out of a duel (exodius and exodia necross deck for example) plus the regular exodia deck is easy to side against anyway (mind crush, trap dustshoot, my personal fave exchange ect...) though mabey i don't think they take the fun out of a duel is becuase i have yet to get beaten by a exodia deck (as far as i remember anyway)