perhaps the land could be re-purposed as
a parking lot.
Those parking spots would cost between $18,000-36,000 apiece (depending on who's estimate of the razing costs you accept). Pretty pricey parking lot.
And if they EVER build another structure on that piece of land, expect to be picking up the tab for more "Reliant Center halls" at the cost of $100,000,000 or more.