As a tangential issue, some of us (okay, me), when we complain that Disney doesn't have sufficient "capacity" to accommodate all the DAS/ILL/G+ crowd without making things miserable for the rest of us, aren't saying WDW necessarily needs to build more rides. It's not a question of Disney's maximum capacity, but of Disney's choice not to ever use that capacity other than once or twice a year. The rest of the time, even during major vacation or holiday weeks, Disney deliberately understaffs attractions and runs them with a fraction of the ride vehicles they could be using, solely in order to increase profits.
I may be able to stomach waiting over an hour for Big Thunder Mountain or Pirates of the Caribbean, on a day where the park is open 2-4 hours less than it used to be, in a line that barely moves at a crawl, while dozens of impaired/G+ people are surging gleefully ahead of me in a neverending stream. What really pi$$es me off, though, is getting to the head of that line and seeing that Disney is only using one of the two loading areas, and thus more than doubling the wait for every single standby guest, on purpose! Unfortunately, that's become the standard operating procedure for every attraction where capacity can be manipulated.
WDW has sufficient capacity and operational ability to shorten wait times, just by running existing attractions with appropriate staffing and vehicle usage. It simply refuses to, and will presumably continue to do so with every new attraction it builds. What really needs a capacity increase is the small, shriveled hearts of WDW's corporate bean counters, because their desparate attempt to monetize the queueing experience and transform it into a caste system has diminished the in-park experience for everybody. Nothing about the newest rebranding of paid FP+/G+ is going to address the root cause of that, any more than renaming a disease will relieve sufferers of their symptoms.