From Rob...

There is currently a hard limit on the number of state transitions anyone can make between being a member, being dismembered and rejoining. That sequence up to having joined 2nd time is the end of what hub currently supports. If anyone gets to the end of that and needs to be dismembered again we'd need to add some more columns to dismembered table to keep going with the current pattern. It amuses me to keep making that table wider each time someone gets to the end of the supported sequence. But amusing me isn't really a good reason to keep going with an insane structure and probably a better idea to restructure this so people can join + leave as often as they like without needing repeated changes to the database schema. https://github.com/hackerdeen/hackhub/blob/master/schema.sql#L65

...via https://lists.57north.org.uk/mailman3/hyperkitty/list/57north-discuss@lists.57north.org.uk/thread/4WCY7N4D7UV7HMN4ZOFEDX45JWLFPLQ5/