This sounds like a great idea. I've gone ahead and created a set of two templates
similar to the ones for editors, arrangers, and translators, so it can begin to be implemented immediately if there are no objections.
I just thought of something: should there be some sort of mechanism to input dates to the template so they automatically display on the page (with the advantage that if we need to change them, we can do it in one edit rather than, potentially, hundreds)? (It might have been good to do for LinkEd/Arr/Tr as well, but they're so widely used now that it would be a significant amount of work to remove the redundancy...)