The problem that could occur with reseeding is selling tickets. It is easier for the NBA to fill a 16,000 seat arena in a few days than an NFL team to sell tickets to fill a 70,000 seat stadium on relatively short notice.
Not every team has a fan base like GB and there will be empty seats and the NFL hates that more than a sub 500 team winning a wild card game at home.
It could work out and the stadiums sold out but it is a little more difficult.
With about 5 weeks to go in the season we get a letter from the Packers informing us that the NFL has given them, the Packers, the right to presell playoff tickets. It can be for 1 or 2 games. Depending on their record that year, it can be the wild card game and division game or it can be the division game and the NFC CG. Of course being the gold ticket holder we only get a chance after the green ticket holders have made their choice.
Since GB has 2 full set of season ticket holders they will never have a problem selling out. Other teams don't have that luxury. Therefore GB should host 2 playoff games every year!