Wow that a long read, a lot of points touched...

We can add the trust on random people you meet on the streets by now, we are getting more and more cases of people getting beaten without a reason, persons kicked on train station for the sake of it... So it is becoming hard to trust even anyone outside...

Splinterlands dao uses multi sign for transactions, seems good and fair way, altough it's not very clear for me how the hbdstabilizer works

Casino and such online, I wouldn't really trust them much, like scratch cards, slot machines online, it's all money eat imho