It's a difficult problem and when there's a solution the hackers adjust. They will always do a few things because it's the same group: 1. use existing accounts to post comments or posts and trap more accounts 2. use links to phishing sites that work in a large number of ways (can be copy of condenser, can be submit info, can be hivesigner, etc).
The best response so far has been simply to call it "phishing" when it's seen and never call it anything else. Never call it spam or a scam. Clarity has been the most effective response because there's no maybe here. People know that phishing = never click. But where we have mixed terminology when warning users that's when we have problems as one person's scam is another person's business.
I think creating some sort of a centralized point of muting for all communities can make some sort of a dent in phishing. The problem is there are many non-community related posts/comments. I don't know if the amount of work this will require will necessarily get the results needed. So your idea can definitely help if implemented.
The hackers, like I said before, will adjust. Normally the hackers are well ahead of any company or responses. However, Hive is at the forefront of its tech segment itself and we can potentially neutralize most attacks by trying different options. One of our strongest cards is our flexibility.