Whoops, I managed to forget this thread existed. Anyways, here are some more things I haven't yet shared here:
Weather Star XL v3 Traffic Flow concept, made not too long after I made the v2 concept.
An Air Quality concept for Weatherscan Local (XL) I made back in October 2023.
And more recently, here is a concept of Retro (on the) 8's except a bit more accurate to how it could be presented on the WeatherSTAR 4000. Featuring a custom LDL that fits with the current era of TWC (although probably doesn't look the best with overscan.)