Under the new graphical settings in the video menu you have one giant slider that will change all the drop down boxes to the selected detail level of the slider. If you set ultra, it makes all the drop down boxes ultra. Fair and simple enough. Sadly for people without the better hardware and use the lowest two settings on the slider will come to the realization that it defaults projected textures as "off". Which in this expansion SHOULD NOT BE. That should always be on until you choose to turn it off yourself.
I've been healing the new dungeons and I find that the healing required for them, isn't a lot at all. It's actually very boring. As long as people know what they're doing and what to avoid. Then it becomes too hectic and uncontrollable. Most things people take too much damage from are spots projected onto floors that people stand in without knowing. So many groups I've wiped in until I've mentioned projected textures and then the fight goes off without a hitch.
I don't often question Blizzard on their choices in game because I realize the undertaking of a project this size. But really, how could you "default off" one of the most important mechanics in your new system?