Interesting. I used bullet journaling on paper a while back. My usage evolved into my own style and your post reminded me of some useful concepts I dropped along the way!
I was just writing about by transition from paper to Agenda here about what is for me a missing feature in Agenda to complete my transition, and a workaround I’m trying.
I mention it because it’s a bit like your bullet journal. I might well add some sections based on your usage!
A few thoughts:
My workaround isn’t designed to record what I’ve done, I’ll edit the same note the next day. Might not meet your needs. If you want to preserve a note for each day, you could use TextEdit or the Apple version (Cant remember the name) to populate each days note with your headings.
You could adapt your method to take advantage of Agenda’s strengths, and the fact it isn’t paper based -
No need to add events, because your calendar is visible anyway
Instead of using / to indicate the item is migrated to a note, add a link to the note. (On reflection, maybe that’s what you already do and the / indicates its migrated there, rather than the note just being reference material for example)
Depending on how fine grained your notes are, On the Agenda could replace focus, though that doesn’t work for me.
IIRC the reason for - and + in bulletin journaling is purely because when writing by hand it’s faster that drawing a checkbox. Why not use Agenda’s checkbox, rather than giving yourself more work!?