I'm in favour of the Last Man / Person Standing system that Lafungo has proposed. I also feel that some of the points that have been raised against it have some merits though. If we're really going to expand the KO stage by that many rounds, it will allow (and even stimulate) top players to play more safely through the first ~75% of that. Only one person will get eliminated anyway and you'd need to do very badly at first to be that one. In a way the entire group stage is like that too though, so it's not a huge problem.
Perhaps a system can be devised where at least more than 1 person per round drops off (and perhaps not 1 track but 2 per round?). A bit like a mix of the LM system and the current one, trying to combine the best of both worlds. Though then the next track would need to be started instantly to avoid the screen cheating thing.
i'm not fond of a 1vs1 playoff system though... TT is not a versus mode, so i think it's more logical to compare your perf against all other players (like in group stage)
Agreed with Tif and Cedric here. TT is the opportunity to really have a global competition that allows direct comparisons vs everyone. Doing 1 v 1 systems in TT to me would feel like an attempt to increase variance in an artificial / forced manner.
About the cheating thing, that can very easily be resolved. Just let each KO player have a dedicated timekeeper/referee, exactly as in group stage, and let all players start at exactly the same time. Done. We did this at ASMKC and it worked fine.
