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All of this is fine for other Tournaments. We have rankings, just like in chess. But what do you do if a player appears out of nowhere?
Your rankings are not taken into account when organizing Tournaments. I can give an example of my acquaintance, RoninHW, who in his first game in the Tournament will play against the CIS champion (see the M200 #7 bracket). I don't see any fairness here; please point it out.
When I gave the example of chess, I was talking about Tournaments that divide players into categories based on their ranking, and Tournaments are held only within these categories, that is, a 3rd-ranked player only plays against another 3rd-ranked player, and a 2nd-ranked player only plays against another 2nd-ranked player, and not the world champion against an unranked player. I understand that there may not be enough players for a full-fledged ranking system; Heroes is not as popular as chess, but you could create at least some semblance of it so that such absurdity does not happen.
What to do when a player comes from nowhere? Put him in a beginner's Tournament, just like in chess. And if he meets the requirements, he moves up to the next rank.
Furthermore, the presence of clones in this Tournament greatly affects its status. Some newcomers may be afraid to sign up for the Tournament because they don't want to play against clones of experienced players.
And does this justify such radical measures? Some hypothetical fear of newcomers playing against clones? I would like to see examples of this fear (with quotes), as well as compare the number of these timid newcomers with the number of those who will be excluded from the Tournament as part of the fight against clones according to your method. In my observation, clones are only a concern for those who could not get into the Tournament (a prime example is darkello), and simply for outside observers.
The status of the Tournament? What status can a sandbox have, which is necessary for adapting newly arrived players? Or am I not understanding the concept of the event?