Understanding Apple’s limitations, how about the ability to specify subfolder(s) then? (You already save in a Monosnap folder, so more subfolders shouldn’t be a problem).
Right now, a forward slash in the “Filename template” seems to just be sanitized out of the filename.
The people who use a product like this are the ones that take hundreds to thousands of screenshots a day/week/month and need some ability to organize them automatically.
At a minimum, it’d be nice to be able to do:
%Y-%m/%Y-%m-%d_%H%M%S_%W (which sorts by month)
but could also be useful for something like:
%Y-%m/%d/%W/%m-%d_%H%M%S (which sorts by day and then by app)