Yes

As much as we have listened to people complain about being flagged it's about time.

That or emotions like Facebook would be wise as well. Though, id make it so users can set what %'s the emotions have. Say an angry face is worth -50% upvote or smoke coming out ears is 100%.

Regardless users are going to complain, the better option is to keep flags but for steemits benefit to log abusers. So, id say keep flags and add downvotes.