Agree that the league looks pretty wide open without a clear cut favorite like Hanko, Rome, Johnson etc. that's a very solid list but you are missing a couple of people, most notably Stephen Schroeder from Navy. He ran 14:00 last spring and along with Kelly (10,000 champ), Hebda and Sweeney, he should be a contender. Navy looks like the favorite.
From Lehigh, Mahalsky is the top returner in the league and also had a very good regional meet. You are forgetting Jimmy Miller though, who missed last xc season with injury but was 4th at the 2012 championships and ran 8:10/14:10 or so this past year. He is back for a 5th year.
You discounted Bucknell but they have a few who could contend. McGowan was 5th last year and is the 2nd returner. John Dugan was 3rd at the 2012 championships and had a good regional meet but missed last fall due to injury (and the track season?). Andrew Garcia-Garrison was runner up in both the 1500 and 800 this spring as well. They could all factor, and if Garcia-Garrison builds on his spring and Dugan can regain his previous form, Bucknell should be solid.
Boston U also has Alec Olson, who was the steeplechase champ this spring. Along with Kevin Thomas they will most likely improve on their finish from last season despite losing Peters as they seem to be deeper.
Johnson from American ran well in both xc during the outdoor season, so it will be interesting to see if he continues to improve and if American can contend.