No - I actually agree with you - sometimes this thread gets bogged down in comments that would be better served in a separate thread - and I wasn't responding specifically to your post for you are not the first to say that. That's why I threw in the piece of news.
Now - a separate comment on the "Avatar in 2017". The reason Disney doesn't tie to a specific date this far out is that construction issues are unpredictable, and they could easily run into issues. At this stage - by saying 2017 - they could open it at any time. My guess is they would PREFER to open it earlier in the year, or at least before the summer season. While 2016 they'll have the new Frozen and Soarin' rides, it will be a year of little new stuff and lots of stuff on the horizon, which will likely adversely affect travel. (If you only go once in your life and you know all these things are coming in 2017/2018, are you booking in 2016? My guess is we will have pretty firm dates by the time they start looking at 2017 bookings, so probably by next summer.