I see one Staggs comment from the Parks Blog has been posted, but here's a more recent one:
Could just be meaningless fluff with the Pleasure Island nod to quiet the many unsatisfied commenters, but if there is some substance to this and his (or whomever is commenting on his behalf) comments, this may be more than just a mall.
As for the comments arguing that international tourists like malls and that some people can't shop except when on vacation...a lot of things would be popular on Walt Disney World property, but that doesn't mean that they should be built. I'm not saying Disney Springs shouldn't be built, I'm saying "fills a need" or "it'd be popular" is a very poor barometer for whether something is a worthwhile addition to Walt Disney World.
A Honey Boo Boo Megastore would probably do solid business, perhaps one should be added?
I'm in the "meh" camp on Disney Springs right now. Nice malls are a dime a dozen, but if built, this does at least improve the mess that is Downtown Disney. A few unique Disney concepts (especially something akin to Trader Sam's) would make me more enthusiastic.