Preferably a user-defined amount of days, of course. The reason is pretty straightforward: one day is often not enough to forget cards you did in one ‘direction’.
This was asked before including myself. Damien’s answer was:
The burying functionality doesn’t have a concept of a due date at the moment, so it’s not a small change. You could approximate it with existing functionality however, such as sending the card back to the end of the card queue, or rescheduling it for a number of days in the future.
Maybe in the future that feature will be implemented.
FWIW, old Anki versions did reschedule siblings relative to card intervals. It was removed in more recent versions, because it lead to cards being delayed too long - especially when a note type had many card types, some card types never ended up being seen.
Anki 2 is much better than Anki 1, but the #1 feature of Anki 1 that I still miss is that it handled siblings much better.
It did cause some excessive delays for some people (specifically those with many card types), but I still think that was a very small percentage of users. For most users, I think having more robust sibling rescheduling would be a huge win.
All that to say, I’d love to see sibling rescheduling developed in Anki 2… maybe even reverted to the approach in Anki 1 with just a small pop up note mentioned that the setting should be kept low if you have any cards generated per note.
I second this suggestion. It would be very nice to be able to bury siblings (or cards in general) for more than one day.
There are a few add-ons out there that try to optimize the learning experience with siblings, however add-ons are not really an option for mobile users.