during the classic wow beta, due to streamers (not blaming or saying they are bad) the gurabashi arena, the arena master trinkets and the AGM received huge visibility and made common knowledge to the point it for many will be a must have. it even affected retail BFA, the surge in players at the arena was rather huge, plus the BOA trink factors in.
BH and AP were doing to some point what you suggest, but in the end, high levels are there to bust it up or ensure certain twink or themselves gets the chest.
in BC i had a 29 twink war, decided to try for AGM, took near 4 months solo. occasionally a 70 would help, in that i had to turn auto loot off, get arena master and let 70 loot rest of chest. the reason for this...in van wow, the chest was viewed as a loot gold source, possible 16 slot bag which some continued farming deep into BC. etc. in WOTLK...achievements brought attention back to the area
I've heard many of the brazilian community has chosen Thalnos as their realm of choice. I'd stay away from it if you're not looking to deal with language barriers.