I'd like to share my experience with you all. Not quite 3 years ago I was at MK with my son, then 5. We used a disabled stall for 3 reasons: 1) the family or companion restroom was flooded; 2) my son (at the time) required assistance due to a medical condition that was not readily apparent to others and 3) the "regular" stalls were just simply TOO small to accomodate both of us.
Here's what happened. As we were leaving (and I'll add that we took care of his needs in a "normal" time period) we were verbally attacked by a woman (who was in a wheelchair) and her family for "using a bathroom reserved for people in a wheelchair." It got pretty loud (with the whole family screaming at us) and one man (standing outside), who said he was a police officer, said that my son and I should be arrested for using a bathroom stall "reserved" for people in wheelchairs.
Needless to say, I was FURIOUS and my son was hysterical. I quickly ushered my son away as he was screaming, mommy don't let them throw me in jail!...don't let them take me away from you! So here's what I'd like to see.
1. More "family" or companion or whatever you want to call them, bathrooms near Fantasyland.
2. More disabled stalls in general.
3. Larger stalls in the bathrooms in general which would help moms who are helping a child.
4. People who don't judge one another simply because a medical condition is not readily apparent...and people who don't yell at little boys and threaten to arrest them.
5. CMs who have their wits about them in a situation like this.
Now I know that Disney can do nothing about #4...but my blood still BOILS

when I remember what happened. The worst part was the CM who stood there and let it all erupt without trying to help us, ask us our side of the story or calm the situation down. Instead I got lectured by the CM about the inappropriate use of facilities and was told that I could be ejected from the park. Did I report it....YEP, sure did! I spoke with the manager at guest services on our way out (our night was ruined and my son was hysterical) who apologized profusely and took the time to talk with my son and let him know that people make mistakes and that my son did nothing wrong. I'm just lucky that my son's medical condition has now improved and he is able to take care of his own needs in the rest room 99+% of the time.
However, if this EVER happens again, I'm going to whip out my cell phone and call 911 and report that my son and I are being assaulted at the Magic Kingdom and ask for the police to come. Disabled in my mind means that one is "differently abled" which can mean a lot of things.
Sorry for the long post.