A rating system with such importance placed on it certainly brings up this idea of a "social credit system" which is justifiably troubling to many of us. But if the standard for which people are judged is decentralized we could all potentially decide our own ideas about what constitutes trustworthiness and build communities based around those ideas. (I believe Holochain is working on something like this, though I'm not sure.)

A simple version could be a "Leo Finance score" a "3speak score", a "Natural Medicine" score, and even a "Blurt score" etc. You'd have to create a dynamic kind of overall score based on this though, otherwise you'd run the risk of different score systems being at war with each other, where in certain in-groups, a low score at one group would be something people are proud of, and this creates a pretty hostile ecosystem not all that different from what we are seeing right now in the US. A "Left sider" may be proud to have a low "Right side" score and if this is the case, people may be forced to choose a side which will escalate conflict...very ugly.

If you can find a way to make an overall score that does not require high scores across different communities for an OK overall score, but requires a high score in a variety of communities for a GOOD overall score, and a good score in communities that typically don't get along for a GREAT overall score, then you might be on to something.

Ideally the reputation system could be built independently of how many resources we currently hold (I personally can't imagine anything that follows DPoS really improving upon what we have right now), otherwise it will always favor those who currently have power. It would be nice if it could leverage power and encourage it to perform in line with the will of the community, while also not forcing it to do so. Reputation becoming more volatile as it increases? That sounds like an interesting and controversial topic, but maybe one worth exploring? We may be able to fix what's wrong with DPoS by balancing it out with such a leverage system. As it stands, I feel the only way DPoS works is with decent whales, and luckily we have a few of those but that may not always be the case.

We don't need to make reputation a competition and so making it almost impossible to maintain the best scores could keep people honest long-term.

ID verification? I'm ok with it for myself but I don't want to force people into it, especially when we aren't all in the same situations IRL, some can afford more transparency than others. ID verification only being a small factor could be helpful. Extra 5-10% score for verification.

If you could find a way to de-incentivize ass-kissing, that would also be fantastic, though it's not as fundamental as the concerns above.

Looking forward to seeing the basics of what parameters would be used to decide reputation (start with the less technical for all of us who are bad with math :-P ).