Following the previous poster, here's my predictions for Division III. Sorry I can't go into as much detail.
Overall, TPA, CPA, and River Valley will take top 3 with BASIS Schools absent.
Both LD and PF will be fought between CPA and TPA, and policy will likely be PCDS and CPA.
Limited Prep will be CPA and TPA with a few outsiders from smaller schools.
Interp will be River Valley along with Great Hearts with a few people from other places (Winslow etc.)