i would love a personalized server time, but i believe it to be impossible since we all interact with the rest in some ways. our duke status in a country for example or the market price adjustment or the loan payments etc.
the one solution i see is to shorten the game day lasts only 8 RL hours. this way all players will have a beneficial and a bad server time. taxation and all that kind of stuff have to get adjusted so that nobody gets triple stipends or get tripple taxation.