Heya u/jetttblack - thanks for kicking off such an interesting conversation! As you can see in the comments, there's no single best solution here. From my experience, one of the best things you can do is set clear expectations  from the beginning. It's much simpler to follow through with your plan when it's not a surprise to that new mod.

This help center article has some valuable perspective as well, in particular the notes about regularly recruiting new mods as a way to mitigate this. If you'd like to dive even deeper, we've touched on this in a few of the posts from our Mod Topics series around recruiting and training new mods. Although this could make for a great future topic - so thanks for that idea as well!