I can understand that to an extent, but maybe just because I am Sims 3 spoiled, but it also seems like reaching. Actions/skills/unique features/premium objects I understand tied to a pack, and I totally get the frustration when someone wants just one thing. I personally do not see 5 traits as necessary (I mean I could cheat add them if I want), but I just would assume it a base game thing, it doesn't seem like an overly unique thing adding more traits in the create-a-sim. But as I said, it could just be I am Sims 3 spoiled.
Really you don't need families/children to enjoy Growing Together? What does it offer that is not family/children oriented? Because I will buy a pack if there is enough features that I think I could get use (and on sale LOL). Like funny enough, I took a chance at Lovestruck (because on sale), I am not the biggest on coupling and dating, but I have noticed my household has fleshed out some gameplay and depth, and they autonomously finally do some couples things (flirting/Woohoo and get flirty easier on their own, without my direction for a change). I haven't seen relationship decay or the negatives yet, but I am still trying it out.