Is there anything in the roadmap for (a) making it so admins can put LIMITS on the amount of invites users can create (there was a github issue for this but it got closed as "not on roadmap" recently, so I'm guessing very not) and (b) keeping track of the chain of invitations, so that if Alice invites Bob who invites ASDF1, ASDF2...ASDF47, each of who invites spambots, all those spambots can be identified as stemming from very probably Bob and possibly Alice as well?