No offence intended, but I would like to remind you guys/girls of something: PS is a game, not a RL simulation. We are here to have fun, not grind. We already do grind in our real lives. We should first look at the things that may unsettle the game balance IMO.
And I'd like to say that I don't agree with some of the ideas that if implemented, would cause people spend more time to achieve same amount of in-game-reward. Not that I'm saying those ideas are not realistic, or bad, but they are not appealing either. A person who sleeps 8 hours a day, and works 8 hours a day only has a mere 8 hours left to himself/herself. When we include the daily-activities such as dining, bathing etc. not much free time is left. Time may be the only limited source in Hydlaa, but it is also the most sensitive topic to be tampered with, IMO.