I think we should have a agree and disagree or you can say, like and dislike button under posts
This could prevent users from getting infracted because if you want to disagree or agree with someone's reply to a thread in market place or something similer, they post short and unrelated replys in selling threads which ends in getting themselfs infracted.

Lets me know if you guys think this will be helpful

Honestly, I think it's pretty pointless.
I don't think anyone needs to know what you think of their post and quite frankly, I don't think they care either.
Also if you want to prevent getting infracted, just follow the rules, they're there for a reason.
Not supported.

It's not hard to make posts that bring some sort of discussion to the topic.

That being said, upvoting and downvoting won't matter or change anything.

We had reputation, it sucked.

Reputation systems have been tried about 4 times. We ended up scrapping them each time.