Edit in place tooltips for teams
Tooltips that are associated with page elements similar to these: https://vitalets.github.io/x-editable/demo-bs3.html
This would allow for users to add their own in app documentation for features they infrequently used.
If combined with the sharable google doc feature requested by @dyaniwood #37 this would make for a very nice integrated collaborative app documentation system
Similar to the sharable google doc for team collaboration this may be a good paid upgrade.