I'm glad you agree,
This exam could include basic things like:
How fast you can smash the botton. Very easily doable, player joins a Discord with a member of staff team and smashes button with open mic, then he gets rated 1-10 how good the smashing was. This indicates great potential for doing 20k dps and we need people like that.
Writing down 5 ways to troll players, things like promising gold to last person who links Thunderfury in Trade chat or making another portal to Orgrimmar in that empty space at Dalaran portals, talling people to delete cache or relog when they cant enter it. This all should be done on the paper(because obviously anyone can copypasta from google), mailed directly to secret Warmane headquarters under Kremlin.
Then of coarse more advanced things;
Submitting video evidence to proof that you know how to keybind your stuff. Must be done in some Video8 casette format because digital is easy to fake.
Also backpedaling for any reason should insta ban your account, then going trough unbanning process trespasser should walk from Undercity to Booty Bay only going backwards.
Then end tier tests, this will require Obnoxious to travel to players physical place of residence:
Obnoxious will give player 5 A4 sheets and pencil, one sheet with stat/spell scaling for players chosen class. He must then write up perfect bis list for each raid boss in game, no item lists, that all should come from memory.
Player should recite all class spells and talents that are in game, all from memory. Do this until Obnoxious falls asleep, continue next day for however many days necessary.
Practical exam, player runs around training dummies in circles and does max possible DPS chosen class can do. Meanwhile Obnoxious beats the player with Foam sword, just like one in game, player can choose color of the sword. If players DPS drops below 98% of max possible its clear that any distraction will lower his DPS in real raid scenarios and player is not worthy.
This is just a few, this can be improved over time to allow only the best players for our Utopia.