Here's a real world example. Where I work we have a big overarching WiFi network. It's serviceable but pretty slow, especially when there is an event going on and a lot of people are on it. I also have a more powerful WiFi network in my office, however it has very little reach outside of it. If I leave my office to go to basically anywhere else in the building, it will switch to the broader, slower network when I leave but won't switch to the faster network when I return. I can't 'forget' the slower network, as the other places in the building I spend time in get poor or no cell service. It would be fantastic if I could just swipe up, force press, tap to switch networks instead of going in to settings every time I return to my office.