After several dead ends I think we have something that is useful to share - just add a Tag - not as useful as having it as an Action after Adv Search perhaps - but with other possibilities that I like.
After more meanderings around the Universe of Webform_civicrm (Creator: Coleman) I started thinking that I should find a way to use it to collect more complex information about Organisations and Relationships which might be required as part of an event or membership registration.
The prompt for this particular meandering was that currently Event Registration does not provide any in-built options to collect information about an Organisation that the registrant might represent, beyond the Organisation Name (currently employer) and Job Title.
A couple of issues have begun to sting us repeatedly and I see others raising same issue.
Getting a Default Header/Footer used in the SysTplMsgs
SysTplMsgs (System Template Messages) are found here /civicrm/admin/messageTemplates?reset=1)
To avoid repeated copying of the desired header/footer in to the upto 22 SysTplMsg, one option would be to add a checkbox to the CiviMail Footer/Headers (/civicrm/admin/component?reset=1)