Not easy to set a reasonable settlement on such thing."Hundreds will receive $21,500 each." Cramer
One practical standard, what would an average man on the street require in compensation to endure the adversity.
I may not be on the street right now. But I'd want more than $21k for that.
To your sensible point on qualified immunity I'd add: eliminating it may not solve the problem. Even if not, it's probably the sensible thing to do. BUT !!
Such implementation may not work, as tenured policemen might deem the loss of it an intolerable liability, and switch careers.