Going to agree. The banners look to be fairly useless now for telling you whether or not the person is a positive player. Had a guy the other day with what I think was a friendly team mate banner spend a good chunk of the game pushing people around in unfriendly ways. Never mind that before, if someone had a non-Honourable Opponent banner, you knew that they would be an awesome player in terms of being positive. Now many of the people I see with banners seem to be just normal players, not necessarily positive players.
This is all anecdotal so time will tell, I suppose.