Interactive Sponsored Locations
Currently sponsored locations are essentially just normal locations and are really set up for the large scale chain.
I propose a new kind of sponsored locations for those of the single nerdy quirky so that would like to get in on this. Allow shops to setup their own shop cauldrons and create and sell potions to players. They can discount potions vs Niantic store but would still be limited to what they can craft so they would have to strike a balance on their own. This would create an incentive for players to visit their location and presents various other opportunities for mutual benefit of the sponsored location. For instance they could have an event to bring in customers during a low traffic time, have dark detectors, themed goods for sale by the business, and maybe they give a potion pack to their customers for coming in. This requires management on a level that att will not do. It also requires trading. However, for a gaming bar downtown it would be fantastic.
Side note: these locations would need ingredients and so would likely essentially create a questing system for people to get what they need.
If this is combined with my food idea, You can have actual restaurants become restaurants in the game.