I've actually been having tons of fun in the Iron Banner. I enjoyed it in the Beta as well. I really want my Iron Banner Titan mark back, so I can wear it everywhere, forever. No, it doesn't really feel different from Crucible in any noticeable way, but for some reason I do enjoy it more. I appreciate that I can kill 30s and 26s can kill me despite our level differences, but that's basically what standard Crucible offers. My personal enjoyment aside, it does seem like it's not exactly working as advertised.