Good examples for good and very useful, yet not mod work related bots are on TCG/CCG subs like magic the gathering and hearthstone to provide context to card names, or convert deck codes into a nicely formatted table of the used cards. Or on the Lego sub, returning any set number as a link to the proper bricklink entry.

Yes, thank you for that. I guess I used the wrong term, I should have said "Service Bots" those bots who provide useful service for the community.

and yes, entertainment and joke bots are tiring. (they can exist but, can we apply a limit on their frequency? let's say an entertainment bot can only post a maximum of 5 posts per week for a small instance and 50 posts per week for a significantly larger instance. That way it would still remain novel and it's like a lottery where people are looking forward to its next appearance.

And then there are the more insidious bots that are about to become widespread, being harder to detect the more their refinement advances. It is going to be a constant arms race between bot detection and bot deception skills.

this is the hardest part, as the bot farms typically have the advantage of first strike. If we are not careful, we would be left behind as being on defense puts us in the position of being a reactionary player in this game of whack-a-bot.