Hello,
It would be better if we had some control over Slackbot. As it is, I don't want constant reminders to delete rarely-used channels: those channels are kept as records even if rarely-used. Furthermore, the constant injection into a conversation every time the phrase "I can't" is typed is jarring and unprofessional. It's a common phrase, if you want to be cute with your bot then give those of us who don't want it the option to turn it off.
Thank you.