Bravo arko, very well put.
Might I add there were a few disabled GAC users who did abuse it, however. I'm thinking of the powerwheelchair lady who'd spend the day continually looping through TSM and hogging the one wheelchair car. One could argue the loopers on other attractions (like taking the fixated autistic kid on Peter Pan) did the same. But these people were few and far between. The largest abusers were the fakers and borderline (oh I can't stand long periods - so why not rent an ECV like every 80 yr old?). Those are the sorts of conscienceless people Disney needs to proactively keep out.
The more I think about FP+ the more I think it may solve a lot of my needs better than DAS. My ONLY concern with it is I have difficulty scheduling my activities far in advance. I usually don't bother making ADRs until I'm a week away from my trip, or many times DURING my trip.
Criticism I have about how Disney is setting up FP+ is they are creating a bad situation with their 60 day out availability. That's going to make going to E ticket attractions as difficult for some as getting a breakfast ADR at Cinderella's Castle was. Unless they plan to put in a lot more queue activities to entertain the guests, you can bet your bottom dollar guest dissatisfaction will skyrocket. CMs at TSM have had to deal with angry guests bemoaning no FPs since that ride opened. They should have been the ones to design a new program.
There will always be abuse of anything that gives a benefit. Lets say even if Disney stared asking for proof, it wouldn't be hard to get a Doctor to sign something for you. All you have to do is find the right doctor.
I mean if wealthy New Yorkers were willing to shell out 100$ an hour to use a GAC then I am sure they can easily find a doctor who will write them up something for a lot less. And once one does, you can bet they will tell all their friends who to go see, just like they did with the tour guide.