I updated our forums with the new release and, although it doesn't hide the deleted posts when I test a user's permissions, it /does/ remove them when logged in as a normal user, which is the important thing.
The only other option I could think of suggesting, would be the chance to choose a default action for the "Delete this post permanently?" message when deleting a post.
In the board options screen, you can choose to set the topic delete to not ask the question, and instead automatically delete, or automatically move the topic with or without a shadow topic. It would be nice to do a similar thing with posts - so that you don't get asked the question and can instead choose to automatically hard delete or automatically soft delete a post.
But that's just a bit of feedback - now I can hide the deleted posts from my general users, I'm more than happy.
Thank you - crackin' pair of mods.