The suggestion to eliminate game time completely wasn't meant to be taken seriously. Just because game time changed from faster to slower than real time wouldn't change much in regards to the things that rely on the game time. Your night time quests would still be available only at night and be more likely to be finished in the same night.
Let me see if I have this right ... 1 minute real time is 6 minutes game time, 1 hour is 6, 4 hours is 1 day, 1 day is 6 days. Months are all pretty much 28 days so a month of game time is 4 days and 16 hours of real time. If you were to make a game day last two real life days you would be able to play a daylight character and a night-time character on alternate days and miss no days with either (if you log on at the same time every day.) As it stands now, how do you account for the game days between log-off and log-on? You have to gloss over them and mostly pretend they do not exist.