Will do it mate, but just while I'm here- no. Hillsboro was a grim lesson learnt. Even with conditions accidents could still happen. Happened in a club recently with overcrowding in Northampton where 2 people died trying to get out because of a fire alarm. Exactly the same principle in a football stadium.
Seats.
End of.
If you want to stand, theres plenty of teams around that don't have Stadiums.
This is only really worth thinking about if it can be policed properly and it's safe. But although it might improve atmosphere and attendances due to pricing, my dad tells me that terracing was grim.