That system was laid out too late into human development, though it's still possible it just needs to be given time. Though that won't stop me from using my own system.
Interesting. Although I'd contend no one "celebrates" daylight savings. It's not a holiday, and unfortunately saying "it's not 9am in my house" probably won't get people far.
I do like the percentage clock idea.
I have a 24 hour analogue clock on my wall - one turn of the clock with the hour hand is a full 24 hours instead of 12. It really changed my concept of time in the day. 12 noon is at the bottom of the clock.
It always feels striking to see the clock at noon and realise how small the morning really is due to sleep and how much of the day is left.