I think a lot of people would like to see this. Meanwhile, many community members use a third-party smartapp, SmartTiles. It’s a customizable dashboard that runs in any web browser, so it works on most smart phones. Very popular. It’s easy to give each person access to only the devices you want them to have, such as not letting one kid turn off the lights in another kid’s room. 
www.smarttiles.click
There’s even a topic in the community just for ideas for hardware and color customization for smarttiles: