No we'd be stupid to try it instead of waiting for SMTs and communities and trying it there first.
By the way, you realize that if only a few people downvote (likely) their downvotes are going to allocate the entire downvote pool, making their votes significantly more impactful than their stake, right?
Also, communities are not going to solve it, they are more a frontend story. And SMTs might as well need it.
Communities and SMTs likely go hand in hand. They solve it becuase steemit becomes part of the base layer and the rewarding layer and content discovery is done within communities where moderators etc can use downvotes or flags and they can set their own economics for each community.
Again the fundamental question is, will these changes bring in users or chase users away and it seems very likely it is going to be more of the second one.