I believe that what I want isn’t possible with the currently available options. I think it would require a new gather order option that selects a random deck rather than going through the decks sequentially. Checking my understanding of how current gather options interact with my goals:
Deck/Deck, then random notes - goes through all subdecks in the same order every day, will always pull from the same 4 subdecks and never get cards from the other 3. random notes makes it worse for me.
Ascending/Descending position - doesn’t care at all about subdecks, it will hit the subdeck limit of 1 card, and will eventually get through all subdecks unlike the Deck based options, but subdeck usage will depend on the volume of new cards added per subdeck rather than being equal across all subdecks as I desire.
Random notes/cards - pulls randomly from all available new cards, resulting in weighting new cards towards subdecks that have more available new cards similar to the ascending/descending position case, but much worse for me since it won’t pull the cards/notes in order from within each subdeck.
The best approximation I have come up with is that I manually set new cards for the 7 subdecks to 0 and 1 each day. Doing so manually I will likely do this on a regular rotation, since I don’t actually care about it being random, that’s just the easy way to evenly spread the introduction of new cards across my subdecks that doesn’t require the program to care about what new cards were introduced on previous days.
It’s a relatively small ask for me to need to adjust two settings each day rather than inserting a new card gather order that evidently no one until now has wanted or needed, but I figured I’d ask anyway. The closest analogous request I’m aware of is for a way to set new cards to occur every X days instead of every day - though I believe the way I would like this accomplished is more in line with how new cards are currently done and would require much less work to implement. I effectively want each subdeck to have 4/7 of a new card per day (or one new card on 4 days out of 7), which is pretty close to the one new card every other day request.