So I'm now on gen 3 of this Progressive Legacy, and I'm really liking it so far! One of the things I hadn't anticipated, because so far I've had to move out heirs to their new family they are only able to take their personal inventory with them, which has kept the finances smallish as opposed to a normal Legacy where you keep all that cash and then build on it.
I've also decided to add a new rule for myself, then I cannot change the traits or LTW's of any of the sims using Lifetime Rewards or any other means. In the normal Legacy rules there's nothing that says you can't do this, and I've been known to change things about spouses that marry into the family. Since the whole point of my idea is to just deal with whatever the game throws at you it seems to make sense to prohibit changing the people you end up with.
Currently my heir married into the Broke household. Apparently at the game start the Broke household is a couple with a kid or two, and then the brother of one of them moves in with his 2 kids and no wife. The lady my sim married was the daughter of one of those two kids (of the brother). And the other people in the house are the kids of the first couple. As a result, it shows that she is not related to them because there is no title for your cousin's kids in this game. So that was kind of a surprise! I was expecting that there would be grandparents and such, but there isn't.
Also, doing it this way, I've had to come to terms with the fact that I'm not going to be able to fulfill everyone's LTW. When you move into a house where there's an elderly sim who wants to be a rock star, and is currently working part-time at the graveyard, there's just no way you're going to fulfill his LTW before he kicks the bucket. So I'm thinking that if Metro does decide to turn this into a challenge that there should most certainly be points for fulfilled LTW's because getting some of them done will be either very difficult or impossible.
Anyway, it's been pretty fun so far! Looking forward to marrying into a richer household though. lol