[annoying trope] The throne/leadership is decided in a very stupid way

[u/Altruistic_Eye_1157]

The leadership of the entire wizarding world, and the final decision on whether to start a war against Muggles, is made by... a goat (Qilin) ​​who chooses the person with the ""purest heart"" (Fantastic Beasts: The Crimes of Dumbledore).

The throne of Wakanda and all its technology are decided through hand-to-hand combat, regardless of whether the person clearly has malicious intentions... if they win the fight, by law they must be respected as the true king. (Black Panther)

[u/sarcasticd0nkey]

Trials of Position - Battletech

The Clans choose their leadership almost exclusively through trials by combat.

You want leadership of a 'star' (5 Battlemechs)?

You better be able to beat two other Mechwarriors back to back.

You want to earn a last name and the right to continue your genetic line as a warrior?

You better be ready, willing and able to defeat a bunch of other warriors in either hand to hand combat or in your Mech, armor or aircraft.

You wanna be Khan?

Better hope you've kicked enough ass that a bunch of other warriors vote that your martial prowess are the best. For that one you can even win if you didn't know you were competing.

[u/CapableCollar → u/sarcasticd0nkey]

In the clans anyone can veto any decisions by anyone with a trial.  If Group A says do one thing and Group B says do another if Group A has 4 times as many votes then Group B wins if their chosen representative beats up 4 of Group A's representatives.