Yeah, and I also think the game must have some "mechanics". Like you need to be able to spend time on something rewarding in the game.

The rest pack isn't realistic, but I don't know how you could replace the time it takes to farm them and then train the players with someone equally rewarding. For two reasons, firstly its fun to spend time in the game. Secondly, a manager spending 15-30 minutes should be rewarded in relation to spending 1-2 minutes on the game a day/10 minutes a week. A game like this must have some grinding, its what makes it addictive!