Most people seem to agree that Villains Land will not be a dead-end with a single entry/exit bottle neck. The question is whether the two access points will both be between Haunted Mansion and Big Thunder Mountain, and is that enough distance apart to alleviate congestion?
In that gap there seems to be four ways a path could go to Villains Land given the structures we've learned about. Going from west to east, with arguments for and against:
Big Thunder Trail
This is a known scenic format, seen at Disneyland (and similar to the walkway along Grizzly River Run and along Radiator Springs Racers at DCA), affords extended aesthetic appreciation of the kinetic BTM. The strongest argument for this possibility is that the drain lines are shown here and those often are under walkways. A second argument is that if one or more other paths are used, why the dead space left here? I guess there could be a backstage access road here if visibility was blocked while riding BTM.
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Long Tunnel
The argument for this is that in recent immersive projects Disney has used tunnels to create transition separation, and that a narrow building like this within the park area would have few other uses (beyond wet or dry parade float storage). The argument against is that it's very long and straight rather than doglegged.
Open Path
An open -- non tunnel -- path is good to preserve parade access, and could be plenty atmospheric. It's also possible a tunnel could be located here but perhaps that type of structure doesn't need to be included on the drain plan.
Short Tunnel
This is what is typical with Disney's land-transition tunnels, as seen at DLP and DHS with SWGE. The argument against this structure being a short tunnel is that most people think an extended queue for Haunted Mansion is necessary to remove blockage to the HM-to-BTM path. This seems like the most likely spot for that queue.
Pick 2?
If there will be two ways in and out of Villains Land, what combos of these approaches could work? I don't think any two adjacent approaches would make sense (e.g., Big Thunder Trail and Long Tunnel, or Open Path and Short Tunnel) as they would be too close to each other to avoid congestion.
It seems that any two that are separated could work, but some combos seem unlikely to me. For example, Long Tunnel and Short Tunnel would make sense in terms of both being tunnels, if they felt that was necessary, but the differences in lengths is huge and could be odd. And why are they not the same widths (minor point)?
I also think the most interesting thing about the drain plan is the open area with no structures or drainage. I know some have suggested there could be additional buildings coming that don't require drainage but I have a hard time understanding how any significant buildings in a space that big could not require drainage. Wouldn't a drinking fountain, water-bottle filling station, one-stall employee bathroom or break room require drainage connection? And even if the area is pegged for retail or meet and greet only, without F&B, given the remodel and building-function-changing history of Disney Parks, wouldn't they run a drain line to this areas now anyway to be safe? To me it's a signal this area will have an outdoor ride or a lagoon. We'll see.
But as far as pathways into and out of Villains Land, the other possibility is that only one of these options happens between HM-BTM and that a second path comes from Fantasyland, such as a covered bridge walkway here. Seeing that they are clearing the area behind iasw makes me wonder if a relocation of backstage functions is coming to make room. While this would be a significant -- and therefore -- unlikely project, it seems this is the way to truly alleviate congestion around accessing Villians Land.
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