You should propose why you feel that way in the forum thread for Complex Traits. I'm intrigued as to what you think is bad and good and why.
It's not that they are Complex Traits, it's the base traits.
For example, if I want a leader with Scientific and Charismatic, both are Positive traits. Then I build military units at a massive -40% penalty! In a game where I know I will have to build military units pretty much all game long to conquer foes and defend my cities, that's pretty severe. That's gotta hurt in multiplayer too. Now, against AIs on noble, it probably won't matter much.
Financial usually thought of as a powerful trait as we need a healthy economy all game long. After all we have to cover for units and upgrades costs. Fin starts with a -2 happiness penalty? Bizarre. I would think a community would be thrilled that their leader has a better understanding of economic policies, tax policies, business and trade to help them boost the gold outcome of their own civilization.
Even if Fin is attached to a Viking-like civ where the gold coming in is attributed to plundering foes, the soldiers were usually happy with all that loot they brought home.
I could see if the happiness penalty is attached to a civic, like such as some late game anti-corporation civic that hates Fin leaders.
I think of Expansive like 1800s America with people rapidly settling the Great Plains and further west in search of land, silver and religious freedom. Why would this make the 5 largest cities unhappy? It solves overcrowdedness and the unhealthiness and the crime it would bring in larger cities, makes those settlers happy, and boosts economic production as these new cities farm and build new goods and services for the general economy. Right? I mean we probably wouldn't needed a telegraph or railroad if we just stayed in 5 or fewer cities? But became a necessity for sprawling civilizations.
Politician doesn't have a bonus to diplomatic situations?
The general idea that a people would elect someone who can speak on their behalf to foreign countries to benefit them is kind of what a politician does. At least a +1. It's not like countries are sending their worst communicators to other nations with a club to physically knock out a trade deal or end a war.
If there is some late game civic that grants a penalty to happiness because a population doesn't like politicians, similar to Fin, I could see that. idk, maybe there is, I haven't looked towards the end yet in civics, my apologies if it's there already. I'm still in the BCs in my new game.