Even though the minimum bandwidth is 5mbp I hope Google may allow a 480p option to games like how Netflix offers their services. Many people who want to stream games off their phones or tablets don't need exceptionally high resolution which may help with those who don't have ultra fast speeds or even those who want to play game without interruptions like buffering restarts.
Best option to get your voice heard, would be to make the suggestion via the Stadia App, select Explore, and then at the bottom of the screen is the "Send feedback" link.
Best option to get your voice heard, would be to make the suggestion via the Stadia App, select Explore, and then at the bottom of the screen is the "Send feedback" link.