I think this may be too far out of scope. But I have to give it a try. If you use agenda a lot you and have many many different projects & sub projects, finding the right project or sub project can get unwieldy. The search feature in agenda is very good, but I usually have filter notes from different projects as I search along the search results (I guess I could use better tags maybe).
This is why I would like a Notes (Notebook) file type that you can save & load as needed. Having this option you can group all your related projects & sub projects into one file. I think searching would also be more efficient as you will be searching through a much smaller note set and all the notes will be relavent to that big project you are working on.
I know that syncing with this scheme will most likely be a nightmare however, If you like this idea, I feel a Master/Slave mode or method could be a way to implement this idea. The MacOs version most likely will be the Master (I don’t know how well it would be implemented on IOS) When you create or load a Notebook file in MacOS that file is created or loaded in to your IOS devices for syncing. You could make the switching automatic or make it a manual feature that must be activated in MacOs and IOS to setup IOS for syncing to the file.
Thanks for an awsome product