Interesting points made.
This is my first post here so Hello everyone.
I can say that from my own personal perspective, that I will never progress further than trust 0/1. I will lurk a lot and read posts, but rarely reply, the reason being is that others will have made the points/positions I have earlier or clearer than I could, occasionally I may be able to throw something into the mix, but I have found that by the time I've composed a post to a thread its moved on.
I'm not sure that I'm in favour of x number of posts allows one to gain moderator level - I'm sure I read somewhere that there will be an element of peer review and communal consensus. Surely that would remove the botting aspect of gaining trust. Also, again from my own perspective, if I was to get to the level 3 moderator level - I probably wouldn't want to do it, even if my peers pushed for me to do so. Why? I wouldn't have the time or inclination to do so.
One of the things I have often thought about on other forum sites is what makes someone want to be a moderator, its a bit like wanting to become a politician. Fair enough many people work hard to gain those positions - but like a friend of mine who strived hard to become a MP in the UK, he never got to office because he never got voted in - came second in the Constituency election.
I think sharing trust across sites is a good thing, but has to be done with caution - how that would be done I don't know, I guess the peers in the new site I'm bringing my "trust" to would make up their minds in there own good time. Plus, I would have to start the process of gaining trust in the new site is exactly the same way as the old one. Maybe a ratio or split could be devised Site1:T100/Site2:T45/Site3:T300 - that would possibly end up being very complicated as to the number of variables and factors that would go into it.
So after my ot ramble here's my 2p-worth on the initial question. Yes Discourse should require reading to gain initial trust over a probationary period, so that it shows on my account that I've taken some initial interest in the discussions going on.