"Vain Zhen just likes the pretty lake's praise and pats
The most important piece of information is that Snowblossom, somehow, has been giving Zhengui headpats.
I have absolutely no idea how that works, but I know that it's adorable.
Don't let Cui know, though.
About the vote, I'm leaning towards the Happiness option.
The Wang Roads, mentioned in this chapter, already give a Wealth bonus. And that bonus is bound to increase once we reach Hamlet. We also have other prospective sources of Wealth, like the Glittering Air from the Cathedral or the Spirit Stone vein.
We don't have any direct source of Happiness at the moment.
Besides, a lot of the food in the fief is going to be fishes from Snowblossom, so any Coldsnaps wouldn't be too bad. It should be enough to sustain the small population we'll have in the beginning. Especially if we build the granaries and improve the fishing infrastrucure in the next few months.
Furthermore, Ling Qi chose the long standing boon for Bastion. So, with Hanyi's help, it shouldn't be so hard to place some cold protections of our own.
Having disease protection for the people living further away from Snowblossom sounds nice.