the option for the pop up for the next date sounds great!
I personally like to journal past events from time to time, so I would find it useful! also if people are importing things from analog sources or even other digital sources, it might be helpful as well perhaps?
I think it would be nice if we could have a mini calendar to generate journals assigned to specific dates, and if that’s implemented, then as you mentioned, might not be necessary for the hotkey in the daily notes to create a non-existing journal for a previous day