The Sims Traits

The way I voted on Zodiac Signs and blood types, Sims 2 did not have blood type, but they did have Zodiac Signs that played a role in how a Sim would react in the game.
That said, Since Sims 1, things that would most likely be included in the game was sold as separate packs. For Sims 1 and Sims 2, I think the technology wasn't there yet to get all the packs in, especially in Sims 2. Sims 1 started it all, but Sims 2 added more to it.
For me Sims 3 and Sims 4 followed the formula, but to me it feels more like they are doing it to get more money, versus actually finding ways to put the pack in without it affecting previous packs. Sims 3 is on the fence, because it felt like a cash grab in some areas, but also felt like it expanded on Sims 1 and Sims 2.
Sims 4 seems a bit more like a cash-grab to me, and I do have it, but I have been waiting to buy new packs. Of course, with occult packs, I buy is regardless of what I feel about Sims 4.