This is interesting. We're in WDW now, and headed to AK today. FP+ has been great - when you have it. But when your three selections are used up, or you can't change the time or experience for one of the selections because there is nothing else available, or the app just plain won't work, it pretty well sucks.
We had an awesome day at MK using FP+ on 12/8, but only because we were still able to pull paper FP, and I also used the trick where you can get almost unlimited FP+. Honestly, if I hadn't been able to game the system like that, we wouldn't have had nearly as great a day, in terms of being able to do so many rides. Obviously if I have to use the system in a way that Disney totally doesn't intend it to be used, in order to have an experience that my family considers good, then that's a problem.
Yesterday, we went to DHS. Neither my KTTW card or AP card would let me pull a paper FP. I was able to use the KTTW cards for my other family members (who do not have APs) with no problem though. I explained the problem to the CM at the FP machines, and he quickly gave me a paper Fast Pass Access card, which was supposed to let me pull paper FP in all the parks for just that day. It worked at DHS the rest of the day, but I didn't try it at another park. I didn't even know those cards existed. I wonder if they're the answer to people at resorts like Pop freaking out about not having access to paper FP. Not a good sign for paper FP supposedly going away.
Also, the app wouldn't let me change any of my FP+ selections all day long, Every time I tried, I got an error. Another guest randomly asked me if I knew how to change FP+, so I walked her through the process, and she also got an error and couldn't change hers. I kept trying every little while for a few hours before I finally just gave up and said the heck with FP+ for the day. We used paper FP to ride Star Tours a couple of times, used the TSMM FP+ that we booked weeks ago, and called it a day in terms of FP/FP+.
There were about 10 cast members stations around TSMM at about 4:30pm, dealing with guests about paper FP, FP+, the 105 minute wait, etc. The fact that there are so many issues with that ride in particular makes me certain that there are Disney executives out there who aren't sleeping because of what a gigantic cluster-you-know-what that attraction is.
There is no way Disney is ready to get rid of paper FP and full scale roll out FP+. But at this point, I think they're just in so deep and there's no stopping the train. Maybe ripping it off like a band aid, instead of prolonging the agony, is the right choice. Not really sure there are any other better, viable, choices. I guess we'll see.