Currently a ME universe can only be based on a Selection. We have many instances where a follow-up ME is required from a previous ME. Currently we have to create a selection of the previous ME recipients, and then select that as the universe. If we want Exclusions for those that have responded to the earlier ME, that is another selection. These details are all held in the original ME.

It would be much easier, cleaner and require less queries, if a universe could be a previous ME. and likewise an Exclusion could be only those who have received/responded to a previous ME