Great post Verlon and well put
As far as the "Works in progress" section being "where the action is" I disagree. My experience as both a poster, and a reader of other people's posts is that no one bothers to invest much into the "Works in Progress" section.
I think some (me included) were implying that the WIP is where the action
SHOULD be if members really want to improve their songwriting - as this where the discussions
SHOULD be taking place - before members get too personally attached to their songs
You have already nailed it in your post when you say that it is often the case people just want to be validated with praise
I think the WIP section may need a "rebranding" - eg make this section of the forum something like the "Songwriting School" - and make it clear that this is the place to go if you have a specific issue to discuss in a song or the dreaded "writers block" - eg "I just can't get these lines to work - any ideas?" or "I have just added this bridge - does it work?" Etc.
This will focus reviews and discussions on specific issues as I know some people,e get grumpy when they get "production feedback" when they are just concerned about "the song" (although they rarely state this in their original post!!)
This would also be the place for beginner songwriters to take their first steps at getting feedback or specific advice on songwriting - almost like a "nursery slope" for skiers - especially as it can be a bit intimidating for new songwriters to post their first "finished" iPhone recording of a guitar and vocal alongside very pro sounding "radio ready" demos that constantly appear in the finished song forum (which is a great thing - especially as most of those members started off with basic recordings and have developed their skills or invested in studio recordings)