You'll have to verify your phone number to sign up, which will make moderation more effective (hard to make an additional account after getting kicked out).
If it grows and that isn't enough to keep it respectful, I will add a $1-2 signup fee for new users.
I'm also going to be spending most of my time recruiting quality people to join the discussions.
Feedback from one potential user: I won't sign up if I can't do it anonymously. 1) I don't like being tracked, 2) the bad behavior of others who track users has made me resent the practice, and 3) people need to be able to express political opinions without thinking they will be tied to their phone numbers. It threatens the civil rights of unpopular minorities, and I've come across several studies which conclude that people self-censor in those situations.
But how to promote quality? One thing I would like to see is a forum that cracks down on thoughtless posts, especially hyperbole ad rants. It's not only a waste of time but that kind of behavior spreads like a virus.
While I empathize, anonymity makes moderation very hard. Most people I've talked to prefer the tradeoff of reduced anonymity for improved moderation. If you email me at [email protected] I can set you up with a pre-verified account that you can use anonymously.
Quality is hard. I don't think there's any silver bullet, but you can check out the community guidelines at discoverboard.com/about which hope to curtail the thoughtlessness you're talking about.