I think it would be fun to have the option of giving your sons careers in your organization instead of selling them all. It wouldn't need to be a complicated feature...I'm imagining something just like what we already have for gangs. The sons have a few minor stats, and can be assigned jobs like starting their own gangs, or going into politics and lowering your bribery rates. Maybe working at the slave market and giving you discounts there. Obviously the stats would make some better choices for some jobs than others, and there could always be a chance that they'd fail (the penalty for which would always be death, of course). I think it would be a fun way to make it feel more like you're building some massive criminal organization, like a cartel or the mafia. It seems to make sense, considering the player's own background. And you would always have the option of selling them if you needed the cash or didnt think their stats were up to snuff.