Thanks for starting the discussion and creating this topic! I would love to see forum category dedicated for classical discussion. I believe it would activate current editors but also encourage new editors who struggle with our guidelines (CSG). We could form a special group which would meet on IRC.
Active discussion is a good way to activate community but I believe we could also activate editors doing some editing together. I believe it was @reosarevok who discussed with me long time ago about potential “artist/composer of the month”. Some of the hugely popular composers are almost impossible to be cleaned but the situation could be improved by having a group of volunteers focusing on the same composer. On the forums we could nominate composers to be selected and could also vote about it. At the moment most popular composers could have tens of thousands of recordings without any performer data.