I noticed Zarhym's comments (from twitter) on April's fools day, quoted below:
We had some ideas that didn't pan out, & just couldn't justify spending more time & resources on jokes. Busy year!This got me thinking: has Blizzard allocated its resources wisely during this expansion? We have had plenty of development resources placed into Pet Battles and Scenarios when the majority of players don't even take part in either. Now they are adding Heroic Scenarios and putting even more resources into Pet Battles in 5.3.We thought about whether players wanted jokes & fake content, or real content. We're working on real content.
For the record: I have enjoyed this expansion and think it's a big improvement over what Cataclysm brought. I just feel Blizzard might be focusing development time on the wrong features.