I think that Rocky Mountain ID is going to be another contender. They probably couple of gotten top 10 at NXN this year if they had gone, and I spent some time digging and found that the average improvement of their top 7 runners from 2021 to 2022 was 54 seconds, with several dropping over a minute.
They return over 20 guys sub 18 minutes, and they have a low stick in Landon Heemeyer who will be trying to podium. Right now, they return - 14:38, 15:26, 16:10, 16:17, 16:27, and 16:34.
If they all drop even 30 seconds, and you throw in some of those 17-minute guys who have a big track season, it's not hard to imagine them top 5 at NXN. It's also important to note that Idaho courses are notoriously tougher than most other states, so that could factor into it.