Ive never understood why any team in this day needs a "new" stadium... Why not just renovate the Metrodome like they're doing in New Orleans with the Superdome?
There have been proposals to renovate the Metrodome. All turned down. With the current state of the place, it would probably cost just as much - if not more - to renovate it than to build a new stadium.
Besides, not only is the Metrodome itself an obsolete piece of shit, the terms of the Vikings' lease there are also less than optimal. The team gets no money from luxury seating (what little exists) or parking revenue, only a small percentage of concessions sales, has no control over advertisements, and has to pay the commission 9.5% of ticket sales.