1. Should linking a rightsholder to a title be compulsory or is this too restrictive?
2. Within copyright page, we may want a link to BL to be able to check their catalogue for rightsholders.
3. Multiple linked publishers (formerly known as, subsequently). Easy reciprocal links possible?
4. Ulrichs: If we have a sub will this help?
5. Clearing titles (and possibly mashup?) may need facility to link former/subsequent title names.
6. Can we link at add packinglistline level by catkey as an option?