An option to display premade ads on tv’s and lcd screens (like mcdonalds and many other brands).
A more in depth addition:
A new advertisement agency could be added to make audiovisual ads that you would pay a montly fee.
Those ads would have 3 tiers like the other ads, ranking from low to high quality.
That fee could be calculated by each individual business and how many active screens that business has.
For a more roleplay aspect there would be different types of possible ads. Choosing the wrong or right ad type for your business would result in higher/lower sales.