I don't think it's selfish to want proper story progression options in TS4. Heck, even those of us who prefer to play in "puppet master mode" but don't really care what happens to the random NPC sins the game generates wouldn't mind letting the game play its sims, so long as it doesn't mess with ours. And I would very much enjoy more family connections for our sims, seeing as how I have one save where I have a vampire who is currently raising his equally vampiric great-nephew (Story-wise, the main family home is cursed so every other generation, there's a vampire born there. His niece was born human, but knew about her vampire uncle, and when she saw her son had the same "condition," she asked him to take him in so that he'd have someone to teach him how to handle his powers and not feel like a weirdo or a freak, since he would have other vampires to hang out with and look up to .). Because the game doesn't recognize great-uncles or great-nephews, I had to settle for the uncle/nephew relationship with MCCC. Kind of a shame, because it's a really touching story, as the nephew has become a teenager and, thanks to his great-uncle and his friends, has grown confident and comfortable enough with who and what he is to actually date a girl, and plans on becoming a scientist. Meanwhile, raising the kid has inspired these bums who have been hanging around for decades just hanging out and making the occasional mischief to push themselves to be better and more...well, grown up. They're still a bunch of goofball vampire bums, but they're finally starting to act a little less like a bunch of perpetual college-age slackers.
Also, a much better away system should be part of that legacy upgrade. The random way that the game handle your home sims while you're with your away sims is really annoying, especially when you have a sim go out at night when other sims are in bed, then you come back and everyone's up and in all the wrong places. It doesn't even generate the sims doing a skill-building activity when you set your home sims to build skills. It's a real headache. I'd kill for TS2's away system at this point, because it's not really worth it to go off lot with one or two sims and leave the others behind most of the time...
