* Tool usage
** How many Invitation Lists are generated per month? (and break down by wiki)
** How many organizers have generated more than one Invitation List? [calculate in months 1-3 only as a gut check]
** What % of invitation list editors joined the event (event registration only)?
** [Guard rail] What are the opt-out rates (via Preferences)?
* Other
** Who are the top 50 most invited editors per wiki in the last 6 months, and how many invitations did they receive?
** Latency
* Discuss further:
** What % of active editors on a wiki have received an invitation (month by month and/or in the last 6 months)?
** [Stretch Goal due to data dependencies] What % of the editors in an invitation list are actually invited by the organizer? Note that this is only possible when we have messaging support, most likely.