I do have a bit of concerns about HF21 in regards to abuse.
The free flags might increase flag abuse...but I'm not really sure about that. Maybe. Also more people might decide maybe some post I think is a good opinion piece should be flagged for whatever reason.
The change in "curation" rewards also kinda worries me. We have a huge abuse problem here. A lot of that abuse is due to whales. This is sold as being about rewarding curation, but when they say curation, they mean voting and stake. Curating as a whale is a bitch. Maybe with the change, it will become more profitable to use some kind of service that curates with your stake and pays you for it. Or maybe it will open us to even more abuse, giving all the whales even more money, for some of them to abuse the system and get paid more for it.
I'd like to see a breakdown by one of our local geniuses going full on into it and potential issues and benefits.
I like the rewarding of development though.
And perhaps the curation rewards should be changed...but I would actually have preferred if it was going to be done, that there would be more things to encourage actual real curation and discourage bots.
I also think it's a HUGE change. Maybe it should have been done in percentage changes over time to ease our way into it, and reverse it if it seemed like it was actually making things worse.
But, hey, here we are. Hope it works. We'll see how everything reacts soon enough.
Edit: Also, please support adjusting the RC system to a curve. It should be a little easier for small accounts to post, or we should start a group that delegates, and it should be harder for larger accounts to abuse without having more SP. Some of the abuse in the last year has shown that it's a bit too easy to spam Steem with not even that large of an account. If they had to have more SP to do that, that might be a bit better.
It's not good that new users hit the RC wall and for some reason a bunch of them have trouble understanding it, and it's not necessarily that easy to grow an account from scratch, so they are stuck with limited interactions for weeks or months. Or they have to figure out how to buy crypto to power up Steem...which we all probably forget how hard it was the first time.