I do think that on here we forget what a small percentage of Disney guests are actually on these boards and have specific requests. From my observation of the number of times I've been down there, I've seen very few people throwing hissy fits about their rooms (though those I've seen have been legendary). I think the vast majority takes the room they're assigned and unless there is some kind of major maintenance issue with it, accepts it and gets on with their vacation.
Very true. DISers are in no way the typical WDW guest. Hard as it may be to imagine

, most people just see the ad on TV, say 'hey, let's go to WDW', call up and book a resort, maybe a package, get on a plane and go.
Even among the repeat visitors, not everyone plans, makes ADRs, or requests a room location. Heck, not even all DISers do those things......I don't. I've been visiting at least twice a year for the 9 years I've been a DVC member, and I call Member Services, book a villa, book a flight, and go. No ADRs, no plans. Well, occasionally an ADR. But most of the time I eat CS or dine offsite with friends.
I used to always request a non-smoking room, no need to do that anymore. I very rarely make requests nowadays, I just don't care where the room is. I don't think I've ever had a room location I really hated. There have been a couple of times I've had a CM show me my room location on the map, and I've asked if they had anything in a particular area, and have almost always been happily accommodated.
Anyway (see, there was a point to all that).....will there be complaints? Sure. But there won't be hordes of people storming the front desks of resorts. Those people who booked because they saw a TV ad and did no planning won't care where the room is. The repeat visitors who don't care where their room is will do online check-in, like me.
The guests for whom room location will make or break their trip will ask for their requests at check-in. I doubt if it'll be a huge number, and I think most people will still end up getting what they want. Yes, sure, some people will end up being disappointed, especially if they're arriving late at a busy time. But that happens now. Requests have always been just that-requests. Sometimes you get 'em, sometimes you don't.
I think those who are very concerned about this change should wait to see how it works out in practice before getting too worried. I really don't think it's going to be the nightmare that some fear it will be. Remember....no one's saying you can't make requests. You just can't make them in advance. Guests can still ask to modify their room location at the front desk, same as always. Guests with medical needs can still request locations through the special services number, same as always.