As mentioned before, being intrusive on the slack is a major issue for me. I spent a while working on this (some of the time working on this was counted in my last devlog which had 10h on it).

Now you can put the flags /bot [–disable-{here|me|channel} #channelname]
Which lets you disable the bot for the current channel, yourself, or a specified channel. The same options exist for [–enable-{here|me|channel}].

Additionally, I spent some time using blockit (a slack tool) to make this mini UI with a disable button.

The disable works by saving to a json file the channel/user ID and an enabled or disabled string (so there is room for other options as well!)
Interestingly, I didn’t have to differentiate between user IDs or channel IDs. The user just puts @user or #channel and the ID is passed directly as a string to the bot.