Alucard is not interested in what the 9/11 families want. He just wants to use them as an excuse to provoke an emotional response that in some minds excuse an act of aggression.
As far as I concerned I think it would be great(although unrealistic) to let families can do what they want... If some want to let some go... let them go... If they want to kill a few... Let them kill a few...
If they want to pull finger and toenails! so be it... Let them decide on a person by person basis if they wish to release, kill, or torture...
Plus it would make for great reality TV!