Nothing positive about it, won't bring any extra money in infact its cost money, and definitely won't improve the atmosphere.
I can also see problems with the people who are seated directly in front of were safe standing ends, with food and drink flying about if we score when someone is tucking into a balti pie.
So someone has sat in the same seat for 5, 10, 15 years with family and friends can just go and sit in 28,000 other seats ?
One slight problem though with your I'm alright Jack attitude is there are not 28,000 seats to choose from are there, and most of what is actually left to choose from are more expensive.