almost no one uses
https://www.wowhead.com/item=7375/green-whelp-armor yet it's banned, lol
you either ban everything and make it a completely level playing field, or you don't ban anything and make it free-for-all.
if you really want to make this event fair, interesting, and most importantly, popular, just ask all players to equip unenchanted gears (28 greens) sold by:
https://www.wowhead.com/npc=65171/alin-the-finder
people can roll 1~2 classes that they like and be ready to practice for the tournament in a couple of hours
i have a job, a side business, i spend a huge amount of time playing the AH, i am gearing up two classic server twinks, i want to do pugs on my hpal from time to time.
I just cannot convince myself to re-sub and spend the time get an int + vers (or pure int even) set for this event (and not being able to pug for a month) because it would already be a huge time-sink in terms of practice (some folks already started practicing, like everything else in life, those that put in the most amount of effort to practice and prepare, will do relatively better)
with that being said, i am sure this will be a successful event, good luck to those that actually put in the work to prepare and practice.