Throughout the stadium? Cuz I'd double my contribution for that...keep the fat asses in they own seat.Agree with others that other improvements should be made before seats are added: redo the facade, improve the concourse, improve the bathrooms...etc
Upgrade wifi and connectivity. And definitely add potties. MOAR POTTIES.
I can think of a few places I'd like to hang that as a poster... Terminal B of IAH for one...
IMO, they should concentrate on the facade, concessions and sound system more than adding to the endzone. If they have $70M laying around after the cost for those additions/renovations, then yeah make the addition.