For months, the vtuber generals have been regularly receiving thousands of posts before being archived. With an image limit of 300, this leads to a lopsided situation where the general may reach image limit long before being archived. This has led to 3 of the same general persisting on the calendar for some time, and could lead to more in the future.

If feasible, bumping the image limit to 350 or 400 would assist in mitigating this phenomenon without manual intervention.
If this is not feasible or preferred, manually requesting archives of abandoned older threads could also be effective.