Hiya, another feature which I though up while adding notes to numerous plugins on numerous websites:
I basically try to use the same note format for all notes so as to easily be able to find the relevant info. My format looks something like:
WP Plugin URL: <a href="http://wordpress.org/extend/plugins/plugin-notes/">Plugin Notes</a> =USED FOR= These notes [Optional]=DEACTIVATED BECAUSE= Reason (n/a) =UPGRADE INFO= v1.1: Should be ok to upgrade - looks like bug is fixed in dev <a href="http://wordpress.org/support/topic/plugin-plugin-notes-won%E2%80%99t-save-notes-in-341">Bug report</a>
It would be really useful if (as an option), I could add the basics of this as a Template, so I wouldn't need to copy it over for each and every note.
To keep it simple, may be add an 'save as note template for new notes' link next to the 'delete note' link ?
Hope this helps!