... don't hold out much hope as been no activity for 6 months.
Maybe, but there's no harm in trying.
My only other suggestion would be to consider splitting your Various Artists album into smaller groups by setting different Album Artists such as Various Artists - Blues, Various Artists - Jazz, Various Artists - Soundtracks etc. (or whatever groupings suit you). I can't think of any other problems this might cause (disclaimer: that doesn't mean there isn't any).