The Louisiana Superdome is getting its biggest overhaul since Hurricane Katrina tore away a lot of the roof and flooded the arena with millions of gallons of water. The 36-year-old domed stadium is America's oldest that is still called home by an NFL team. It will play host to college football's BCS Championship in 2012, the men's college basketball NCAA Final Four that year and the Superbowl in 2013. Gone will be the groundlevel oval familiar to Superbowl viewers. In comes a jazzier, new rectangular configuration. Workers are also adding thousands of larger leather seats with cupholders, new concession stands and other upgrades as part of an $85 million makeover.