If user is allowed to add bots then you take away one thing from the meta-bot. The task of Discovering relevant bots. At the same time you limit the meta-bot from helping you out with a task if a bot for that task has not been installed by the user.

The meta-bot could technically suggest what bots to install if it does not find an installed bot to perform a task. In the current world of bots I think this would be a more optimal approach rather than a true meta-bot to bot transparent communication.

Also take into consideration that a meta-bot should provide proper attribution to whichever bot it chooses to perform the task otherwise you open yourself up to copyright infringement or equivalent.

That's interesting. I guess I just assumed the user would have to add the bots. Otherwise how would they know what the meta-bot is capable of doing? Also, discovery of bots, especially ones that aren't "mainstream" (I'm thinking less utilitarian and more art/fun, here) or part of specific bot networks/marketplaces, would be harder. Allowing users to at least also add their own seems like it would be a useful feature.

If you want to take this offline I've updated my email address in my profile. Don't know if you can see it.

Yeah, we should indeed take this offline. I can't see your email, you can reach me on lumzor [at] gmail [dot] com.