In 3.3 I'm looking forward for raid-instance with proper trash and lore (and loots of course) after big disappointment in "bosses only" 3.2. Really hope the lore and feeling will be at least at same level as in Ulduar. On the other hand I'm sad to see that Arthas will be downed so early, as this is only the third major patch after the release of WotLK. I would have wanted one more major patch before this or postponed the release of 3.2 and 3.3 with months since there are still many casual guilds trying to down 3.1 and 3.2 content. Of course I understand that HC-guilds gets frustrated when there isn't nothing more to clear when everyone has BiS gear and every achievement has been done with mains and alts multiple times and they clear all the content in a night or two. Also the new quest tracking sound fine and I hope I can finally get rid of all my questing addons and at the moment I'm also excited about the new LFG/LFM. Maybe I'm not so excited after tomorrow, but we will see.
In Catalysm I'm totally waiting for reduced stats so there won't be so much "moving parts" to balance between where one new item might lead to massive regeming to meet all the caps and still maximise critical stats. What I'm not waiting so eagarly, is the revamped Azeroth... Breaking huge maps and great lore just for lore for few new levels. People who will start after release of Catalysm will never see the original Azeroth like we will it remember. Lot's of good questlines will probably be broken or totally stabbed out from the final release. And also they have spoked using more phasing which I find really anoying. It's nice idea, but if you need help for group quest, your friends can't help you unless they are on same phase with you. If they haven't done pre-quests or are past your progess they can't help you.