@anon20895533 Great to have you on the forum. I am not technically adept enough to know the answers to your questions. But I from what I have read so far, the forum collectively expects SAFE to support #3 of your options right out of the box.
Long-term we expect to reach #4, but my understanding is that there is some difficulty with having dynamic user interaction. I suspect that the solution will involve the website owner posting a certain amount of safecoin to allow people to comment for free.