The main idea that has been talked about is converting that section of 147 to a boulevard. Something like (probably not as wide as this, even, though):
1. Continue to allow throughput here.
2. Create space for residences, businesses and a whole walkable area along the sides of the boulevard, in space taken up by right-of-way, currently (and increases property tax income for the city in the meantime).
3. Make a better space for pedestrians, cyclists, etc.
4. Still maintain room for emergency vehicles.
5. Provide the potential for greenspace and public art, especially to celebrate Hayti, the community that was gutted by 147 when it was originally constructed.
I think DPAC especially would welcome this because it would create a new commercial district where patrons could go to eat a fancy dinner or get drinks before or after a show (the bulls try to create an all-encompassing experience, so it is less important for them, but creating a more vibrant area is probably also beneficial to bulls games).
In terms of WHERE 147 becomes a boulevard - that can be up for debate. If DPAC and the Bulls want to argue that it should continue to be a freeway all the way to Briggs or S. Alston st to help facilitate people from out of town still coming to events, I would be open to that discussion. After that, it would be only 1 mile to get to the stadium, and if it were a beautiful boulevard, I don't think people would mind a ton - plus it would be advertising for new restaurants along the boulevard as cars drove by.