senior us district judge anita brody approved deal on wednesday .
settlement includes allowing for monetary awards up to $ 5million per claimant for serious conditions connected to repeated head trauma .
nfl expects 6,000 of nearly 20,000 retired players to suffer from alzheimers disease or moderate dementia someday .
wednesday 's settlement would pay them about $ 190,000 on average .
about 200 nfl retirees or their families have rejected the settlement and plan to sue the league individually .