Really minor suggestion but-
I know there is already the private DM Q&A forum for posting "private" stuff to DMs. But is it possible we could just add a private suggestion forum for dropping an idea that is spoilery or doesn't need playerbase input to direct it to the DMs for consideration?
Maybe worth a trial run and see if it's to the benefit of anyone.
Private discussion seems a great place to post "spoiling" suggestions as is, but the extra caption couldn't hurt.