We have a variety of customer types.  Members, Non-Members, et al.  Each outgoing communication has information regarding banking details, company registration and director's names.

If any of that information changes, we need to open every single invoice and statement in Report Designer and make the update (we have 6 or so different invoices and statements).

Now, there is already the ability to update addresses, phone numbers and websites that auto populate the reports...if we could just have one or two "Notes" or "additional information" fields (that can hold 200+ characters), that would be splendid.  You can even make it more function by having the option to "Add new field" so there can be many of them.