I agree with that the results are astounding - as it is hard to generate reasonable maps from scratch. Can only applaud to @Sheikah and other people that helped it along for achieving this result over the years.
I don't entirely understand the discussion however. I think the primary idea is to have some form of rank / ladder for generated maps.
I understand that you don't want it to merge it with the two current ladder queues because they have a specific goal in mind. Generated maps may clash with this. But if it'd be completely separate of the typical ladder queue's then I don't see why we shouldn't embrace it if and only if it is technically possible.
A friend of mine told me yesterday that he still plays Age of Empires precisely because of generated content. Every game is fresh up to an extent. Older games (AoE and Settlers) used to have generated maps quite commonly and it really keeps the game going because of the novelty, casualness and weirdness it can introduce. I'm confident it can and will do the same here.