QB, defections, transfers in, coaching changes.
Lets just say ideally Jaren and Puka grade out lower than they want and come back. Kalani hires an energetic good new DC and lets him hire his own staff, get a new O line coach and the home schedule is favorable on top of a couple of nice portal additions then 3 or 4 is low end
Now say we have a lot of guys hit the portal or draft, Kalani maybe gets rid of Funk and Hadley and brings in a DC but makes him keep the staff in place , then 3 would be amazing, but its just too early to say above 3 is too much