Keeping loot trading in Classic was their plan from the start. Nothing changed. Neither did their plans surrounding AV as they said, from the start, that they were going with 1.12 as the game version to build off of.
So as far as I can see, what Blizz says when they first say something, seems to me like that’s what they intend to stick with. As with other aspects, they’ve stated that this is somewhat of a preservation to the core experiences of the game. So I can’t really say they’re going to deviate much further away from how WoW post-1.12 was rolled out.
There’s my logic; going off of what they’ve done thus far.