I came across a Sims 4 Legacy Challenge that was specific, but I've only seen it posted on FB (public post so visible without being logged in/using FB). I was able to find it by googling "no mom/dad, that's your dream sims 4 legacy challenge" It has specific goals for each generation, uses just about every pack up to the point where it was created, follows a nice theme, and spans 15 generations (thus far.) When I tell you that it really challenged me and made things fun again, I mean it. I have every pack so it can be a bit overwhelming deciding what to do. It's given me some direction, though I'm still not finished with it. :)