It's not often that I disagree with you Nate...But your latest episode presented the whole "off topic" conundrum in an almost elitist sense. I do agree that major off topic swings don't belong in threads, and I also agree that there is some off topic stuff that doesn't really belong in some threads; however, I can't agree that ALL off topic should be punishable.
Example...
Someone posts a thread about getting their NIB IM VE and includes a picture of their new game, and next to the game, they are displaying their Hot Toys IM figures. Someone sees these and posts their Hot Toys figures (none of which are IM) with some text like, "Sweet Hot Toys! I've got a bunch, too." That's off topic because it's not about IM. Is that "punishable" by your definition? Yes, because it's not about the thread at hand.
Of course, in that example, if the next 20 posts are Hot Toys figures with zero to do with the game, I agree that a moderator should step in and redirect the conversation. But there's no reason to delete/ban/etc the posts or posters. There are obvious posts that should be deleted or banned (hardcore porn, shock imagery, racism, etc.). But fun posts like the described? Nope.
I think the better approach would be to have a few more moderators that can go in and divert threads as such. Give the mods the ability to post a colored post (like the OP post) to draw attention to it and give the directive there.
But great episode as per usual. Always love listening to you talk about pinball and pinball related stuff. Keep it up mate.