Disney is usually very tight-lipped on timelines except in vague terms. I'm actually pretty shocked they've already said that Frozen/Norway will be open in May 2016. It's basically a "cover your butt" technique. If they say "sometime 2016", people can't complain when they are late opening. I am sure there is an internal target on all the items you listed, but early in construction they don't want to risk it. Especially a show like RoL, where there are a lot of different effects that have to work together, and work for all the seating angles, its very hard to know for 100% how things will work until they actually start running the show.
What I like less is their recent habit of announcing closures mere days or weeks before they close.