what Final Countdown offers to a format is variance. Its a dark horse deck which catches some players. It separates the players who are good and who are bad when learning to counter any type of deck thrown your way. Final Countdown has its weakness too. its heavily prone to effect negation. Say if someone ran a deck with LaDD(frogarchs, Disaster variants). Getting LaDD out is basically instant win against a Final Countdown deck because they have no way of removing it, effectively allowing LaDD to negate 4 cards, and 4 cards is enough to end the game in their favor. Yugioh shouldn't be a game dictated by a few select decks with only 1 win condition(attacking), alternative win conditions are there for variance in a format, and its survival of the fittest. If you cant beat them, then you chose the wrong deck to run. Can't beat Final Countdown? run more negation then.