This is a question that I remember was brought up on another site (I think it was the late Digital Preservation site, but I could be wrong about that part), and which I think is worth considering early on.
Basically, early voting patterns can have a large influence on whether the site ends up with lots of voting, or little voting.
Do we want Worldbuilding SE to be a high-voting site?
I would say that there are few things more frustrating than spending time to research and type out an answer in particular (but the same goes also for questions) and receive just a few measly upvotes in return for that effort, so personally I would want to establish early on that posts are voted on fairly heavily. (In the name of symmetry including downvotes, should those be appropriate.)
Note that lots of voting going on also means that it will be in some ways easier to reach any given reputation threshold, which may need to be considered in the light of reputation requirements for various privileges.