User blog comment:LostInRiverview/The Sims Wiki Monthly Question - May 2014/@comment-5385060-20140501024829

Harder? No way. I think they should become a little easier, in the way of letting us have some more sims to a household, or at least making it possible again to play more than one household, with out losing control of the other. A game that encourages the player to play generation by generation should make that part easier, rather than forcing the player to reduce the amount of sims in their familes, so they can play each sim raising a family.

If I spent 10+ hours controling a sim, I'm not going to just have him move out, and let the game decides what happens to him.