Having just completed comparing regression and ranking progression in both OFF/DEF over the season from Week 0 to January final rankings for 2023 now and 2024 .....this is what I see:
Preseason Rank Zone in SP+ (40th - 100th)
- quite a few dip under 40th rank and some into the Top 25 for final SP+ ranking
2023 > NCST #39th - (+4) , Maryland #21(+20) , SMU #24 (+23), Duke #30 (+20), WVU #38 (+22), Kansas #25(+37), Troy #26(+38), James M. #20 (+46), Arizona #18 (+49), Liberty #33 (+49)
2024 > Indiana #11 (+70), Arizona St. #35 (+44), BYU #17 (+52), Illinois #31 (+30), Colorado #39 (+21), Baylor #38(+15), Minnesota #27 (+20), Arkansas #24 (+20), Memphis #32 (+11),
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2024 REGRESSION - BADLY in this zone
Maryland (#46 pre) > #86 (-66 rank pt drop on OFF/DEF)
Liberty (#48 pre) > #71 (-18 rank pt drop on OFF/DEF)
Oreg St. (#50 pre) > #97 (-68 rank pt drop on OFF/DEF)
Miss St. (#55 pre) > #88 (-61 rank pt drop on OFF/DEF)
App St (#59 pre) > #100 (-49 rank pt drop on OFF/DEF)
note: - THERE ARE 12 more instances of team regressing from preseason rank to down over 15 places lower by the end
Main takeaway >>> watch SP+ ratings more rather than wins/losses and spreads relating to them
-after 2nd SP+ rating comes....sift through carefully and compare to pre-season SP+ rating that might be out tomorrow or by Friday and look for:
-improving SP+ with the dog
- improving SP+ greatly with the fave....is Vegas not giving it enough respect??
- avoid dropping SP+ teams that are faves by -4 or higher.....chances are, they may regress further but again you need to look at other things as well such as injury report, quarterback play and their development, etc....
- I would look for at least 10 teams in the 30th - 100th rank preseason and check those scoreboxes each game to see how they are progressing /make notes and watch their SP+ ranks for improvement in total of 10+ after 2 game updates of ESPN SP+ Ratings and any team with a combo of OFF/DEF ratings in total adding up to 10 rank pts or more improvement, put them on your list to follow until they regress the other way....then work the matchup angle and take pts? take small fave vs an opponent who is regressing in SP+ ranks ?

Up next when I get time....correlation with Transfer numbers...is there a pattern?
....correlation with # of returning players to lineup equally considerable SP+ improvement?
Proving is hard. Talk is easy.