Now that I have had a chance to explore jumblekat a little bit, I have a couple other ideas that might be cool.

A post setting for protected notes, so users could set outbox/writes to restricted relays. I saw that somewhere else, haiku maybe(?)... I thought that was considerate.

A widget/mini feed for latest notes on favorited relays? Maybe clicking on a note opens the note in a column or maybe it just opens the relay feed as the drop down does? Or maybe it doesn't open anything & simply enables interactions with the selected note? "Latest on Favorites"

Zap splits.