As I presume you know, Solar noon represents the highest point of the Sun in the day. It seems fitting that the 'work hours' should be 4 hrs either side of that (8am-4pm).
Being a 'sunlover' I'm regularly up before dawn so that I can catch the first rays of Sun as it crosses the horizon. To me it's the most beautiful part of the day. Unfortunately, we have semi-arbitrarily defined 'zones' that fluctuate 1hr because of the propagandist notion that extra daylight at the end of the day means more people will be outside enjoying the Sun. This DST causes my work day to suddenly shift so that I'm forced to go to work earlier than normal, & I miss a lot of sunrises as a result.
I like this idea of solar noon for times... Especially for overseas communications too... because we'd just need to know the longitude of the person to know their exact time. (Currently, I'm forced to use timeanddate.com to work out relative overseas times).
Where I am, the state to the North of me doesn't follow DST (Qld), whereas mine does (nsw) and it creates havoc around the beginning/end of DST.
So, at least for me, there are three reasons to use solar noon based time rather than the current system. I'm sure I could come up with more.
That said, I go to bed early too, and acknowledge that isn't the way most people live.