I would like to request a feature to add the merging of individual subscriber records. I hope that this is a good place to determine if this is likely.
Example: I have a number of subscribers who has subscribed to a number of lists using different e-mail addresses. One or more of their e-mail address is no longer valid. I want to merge the history as well as the data for the two or more individual subscriber records in to the correct e-mail address. A means of doing that, so that the two records become one, would be mighty useful.