Rushing requires skill, and it depends more on the player's skill than on the race itself. Why can't a Necromancer or a Human be a rusher, for example, when Vitya arrives with summons on turn 3?
The game is versatile; rushing and late-game strategies are possible for almost all races, and it definitely depends on the playing style of the individual player.
So, you can't immediately put players into these categories. If you give strong rushers to the strong players, the weak players will definitely lose, and vice versa.
If players of equal strength meet, the "rusher" will clearly have an advantage, which they will only need to use wisely.
In my opinion, it's unlikely to be playable.
P.S. And by the way, I personally find mega-intense final battles much more interesting to watch than seeing a demon arrive with a host of troops and war machines on turn 3, followed by an earthquake, where everything is decided in one round.
I understand that all races can be used for rushing, but if we divide races into those that get the maximum racial bonus faster than others, then Orcs, Demons, and Dungeon need only a couple of levels to get the Expert racial bonus and take advantage of it. An Elf still needs to recruit and choose their units, and then they're ready to go. For the other races, time plays in their favor; Mages, Dwarves, and Humans depend on resources, while Necromancers replenish their ranks with raised units.
This division is conditional, but it still exists. And in general, I'm ready to play in any tournament within the established format. Whether it's a themed tournament, a standard tournament, a team tournament, or a solo tournament. Because Tournaments are awesome!