What a spirited discussion! Wading in with some thoughts on a few points.
The new gate fans need to acknowledge it really is a zero sum game. You can’t have both (Disneyland forward and a third park), you get one. Either Disneyland and DCA continue to see a steady stream of investments, or they get put on the back burner for a quarter century to support a third gate initiative.
1. "Either/or" --> "If/then"
Is it a given that developing the Simba lot/“DLForward” is mutually exclusive with some kind of theme park usage on TSL? It seems to me that there is a scarcity of land in Anaheim that’s zoned to be theme park, but plenty that’s zoned for shopping/dining. I certainly agree that they wouldn't allocate capital to simultaneously develop DLF and TSL, but in the long-term I don't think it's unthinkable that both sites could be theme parks.
If I were Disney, and trying to maximize capacity in the long term it seems that building out the TSL as some kind of Westcot experience with integrated hotels - which would be able to charge significantly more if they were “park view” - and buying up the struggling OC Vibe to redevelop as the “Disney Springs”/additional hotel district would be the maximalist plan.
It’s fair to argue they wouldn’t sell to Disney at a fair price, but I think this is on a long enough time horizon, and the potential upside is such that Disney could move forward with this as Plan A
I appreciate that passions seem to run high with this issue but I suppose I’m just not convinced it’s an either/or in the long-run. The question of how to sequence their investments / which comes first would certainly be relevant. If I had to guess I suppose I’d say it would make sense to develop the adjacent lots first and then turn to a potential 3rd gate + hotels in the 2040s or so.
They could also preserve some optionality and make their development decisions based on attendance patterns: if DCA is still lagging considerably after this latest tranche of investment, they may prioritize the Simba lot. If after that, Disneyland and DCA are still being packed to the gills they could pivot to doing the TSL. If DL park sees a dropoff (this seems like it would never happen) then they could choose to do the north parcel of DLForward to boost attendance there. Not advocating for any one particular sequence here, but just trying to gently push back on the idea that this has to be some zero sum game when we're talking about 10, 15, years down the road.
2. Viability of a TSL “3rd gate”
I agree the current plot of land wouldn’t have enough space to warrant an equivalent full price ticket as Disneyland park, but I don’t think that what they build on TSL necessarily has to be a head to head competitor with the other 2 parks. With the success of their seasonal events, the cruise line, DVC, even the failed attempt at the Starcruiser hotel I do think there's an appetite at Disney to diversify their offerings.
I wouldn’t be surprised if they initially did due charge full price due to the novelty premium. If demand doesn’t keep up, I could definitely see this be a food & wine / seasonal event focused space with a reduced ticket price, or even a dedicated special event park with quarterly events where your admissions includes some of those Food & Wine or Not So Scary type perks. This would also allow them to sell big package deals for "VIP" style folks that include a stay at the integrated hotels and priority viewing areas or other added perks and packages. A smaller, denser offering with more frequent special events and entertainment would make sense for a lot of the repeat visitors that make up so much of their market.
Much like with the zero-sum question, I'm not trying to say that my specific examples are what Disney need to do, but that given some of the space constraints and the locals heavy market, we don't have to imagine a full sized Disneyland park style being crammed into a smaller satellite space.
Believe it or not, my idea with using TSL for the hotel/shopping district, what I had been calling the West Coast version of Disney Springs with Hotels, was so they could tear down DTD and use that as the last huge piece of the expansion puzzle so they can make one big contiguous parcel for the west side. This could either be used as expansion of the two parks, or as a 3rd gate. Because that gives you almost as much space as DCA for a 3rd gate.
So again I'm not looking for a 2nd mall, in fact I'm not looking for a mall at all, as I've said numerous times. I've always said I just don't want a 3rd gate (for many reasons), I rather have expansion of DL and DCA. But if moving the hotel and retail district to TSL gives them reason to tear down DTD and make enough land to build a proper 3rd gate within a few steps of DL and DCA, why not.
3. Viability of a standalone hotels/shopping district
Much like Walt's "flywheel" that powers Disney's overall enterprise: with film IP driving television into publishing into merchandise into theme park developments and back around, I sort of see the foot traffic/demand at a resort being somewhat similar. Theme parks kickstart the wheel which brings the foot traffic, bringing them past retail shopping/dining and attracting out of town guests to stay at hotels. You can also command a significantly stronger premium if your hotels have the benefit of proximity to a park, park view, or even some sort of package deal with the events like I contemplated for some sort of Westcot.
The Disney name alone would certainly command a certain level of demand for out of towners, but I’m very skeptical a shopping district removed from the parks would generate enough foot traffic to pencil out without that primary demand that a theme park provides. People like DTD but as others have mentioned, SoCal is not lacking for malls that are far superior to DTD without the added benefit of proximity to the park.
If we’re trying to understand things from a logical business perspective tearing down DTD entirely and moving it away from the core of the resort seems pretty dubious
The cost of the tear down alone would be significant, to say nothing of the lost revenue in the meantime. You’d also lose out on a lot of the hungry/spendy guests filtering out to their cars and elsewhere that the current location capture