I come across a lot of "answers" to opinion-based questions in review queues that don't actually answer the question. I've noticed many of these are either requests for clarification on the question or requests for clarification on another answer. In regular Q&A these would be asked as comments. Opinion-based questions don't have comments. (Well, they do but they're not visible)
This leads to opinion-based questions having a thread of conversation that needs to be followed in order to get any value out of the answers. Having discussions on certain topics can be helpful (has SO considered adding such a feature?) but just like regular Q&A opinion-based questions should have specific answers so that if a user is visiting one later down the line they don't have to follow an entire conversation.
If, for example, I'm looking for recommendations for an IDE and I find an existing opinion-based question like "What is the best IDE for JavaScript?" I want to see answers in the format of "I like IntelliJ because these features I find useful for web development" or "I like VSCode because these other features are also useful for web development" and not an entire 20 reply thread where the discussion is fragmented.
TL;DR Objective questions consolidate objective answers. Opinion-based questions should consolidate opinion-based answers. What we have right now is discussions. We already tried those and they didn't work.