OP Creating separate threads for each of problems you discovered here will not aid your quest; instead, combine all of the problems into a single post and update as you discover new problems.
You should also note that those boards serve historical purposes. Merging or discarding destroys that.
Before you start throwing pitchforks, let me ask: are we really adding value with all these boards, or are we just creating more trash? But hey, what do I know? I'll just sit here and watch as we continue to accumulate dust.
Your AI dust is what we have to deal with right now.