I'm using Joplin since a long time, and I always wanted to add new features inspired by my usage.
I'm quite ready to motivate myself, but after a quick review of API docs, I'm not certain of plugin capabilities.
As a starter, what I would like to experiment :
- Create custom MD tags (a event date date, a person name tag..)
- Display a view to aggregate some of those tags (agenda with future events and due date, list of persons...)
- Create new entries type, such as "meeting report" with specific fields (by using tags)