they're trying to suggest bugs fixed such as under org, under stormwind, zeplin and boat bugs, corpse surfing, loot surfing, RAGNAROS spawning twice
they're trying to suggest non-vanilla stuff added such as achievements and pve teleportation lfg, lfr
they're trying to suggest vanilla stuff removed such as debuff limits, unbalanced classes
they're trying to suggest a burning crusade server despite the fact outlands has never been touched you can already play the original burning crusade
they're trying to suggest a wrath of the lich king server despite the fact northrend has never been touched and you can already play the original wotlk
^^^^^^^^^ALL OF THAT IS NOT VANILLA^^^^^^^^^^^^
RULE 1: what is from vanilla should stay in vanilla
RULE 2: what is not from vanilla should never be added to vanilla
RULE 3: classic expansions already exist untouched, expansions are not vanilla
RULE 4: bug, glitch, exploit fixes is not vanilla