Yeah, although I still believe that 16 or 17 to win would be better because 19 just forces the losing player to quit fighting last year, Devo put out a very good point about the essence of Duo. You need to be the most powerful to win a Duo. So Duo is a different kind of race. I'm not saying it's a better or funnier race, just different. Then your strategies and tactics must be slighly different in comparison to a "european map" 1v1 game. This is good.

For what has been said until now, I've changed a bit my opinion on how a "perfect" 1v1 Match should be. This is the situation updated:
1) No GvR. Really too unbalanced. Useless waste of time. - Discarded.
2) fasces could be right saying that FGvRT is more unbalanced than we believe. Maybe too much. (Unfortunately I've never played it...I'd need a test before I can say anything. Anyone up? I'd like to be Jugg.) - Under trial.
3) GvI surely useful to detect good skills' differences. - Included.
4) FvA surely useful to detect light skills' differences. - Included.
5) Duo surely useful to detect any skills' difference. Further, the different strategies it involves make the Match more complete. Further, it's a perfect tiebreaker in case all the other sets ended 2-2. - Included.