The lack of proper curation incentives drove us to tricky implementations which we had to tweak continuously in the way we reward our curators/moderators.

Can you elaborate on this? Do you mean to say that if curation rewards were higher, you would spent less on incentives for your curators?

The lack of downvotes incentives made us think of complete different ways to sort our contents, compared to what the blockchain can offer.

As you clearly agree with the points in the post, could you give more details on your comment? I feel that your words are too broad and don't know what to take from them.