I agree with you, that time is money down there (especially with a young child.)It is almost certain that WDW will expand, but equally almost certain that expansion will not result in any resort pricing relief. The only thing that will result in pricing relief is if enough people stop booking the WDW monorail resorts. If the resorts are empty because they are priced too high, only then will WDW reduce the prices.
My wife and I were talking tonight about how dramatic (and crazy) the price increases have been at the monorail resorts over the past 10 years. That said, we will be staying at a monorail resort for our next visit because with young kids, we still think it is worth the high price for our 5 day WDW visit.
This will blow your mind. 9 yrs ago we took our son for his first trip. We stayed at the Polynesian because the offer was "Buy 4 nights at the resort with park tickets, get 3 nights and park tickets for free."
So you are correct, things have changed over the last 10 yrs.