All good points.
I wonder why the "active" Shrine door didn't open in the Cannonball or Horseshoe run. Odd.....
I'm still wondering why they installed a mechanism in there to automatically unlock the door, only to never use it.
I am 100% sure that it did have that option, but it was just set to never open. You know how the Heart Room/Medusa was fully-locked during the Wheel Room/Rock Quarry layouts even after the artifact was received? I think the "mechanism" was set to "never open" for that room.
I also think that the right Shrine & Golden Doors was set to "never open". Just think about it. Why would they install a mechanism (We do know that the door opened automatically along with the left Shrine and the other Spiders Lair Door in "Keys") if it was a door with nothing behind it? Like I said earlier, the golden door closest to the front of the temple on right was indeed a dummy door. We know that there was nothing behind it in the Swampy area. And it didn't auto-open in "Keys" by accident.
Again, I'm pretty sure that when the door auto-opened in Keys in the Golden Doors area, it auto-unlocked them in the Shrine as well. Thus, if we ever saw the Shrine in the "Keys" run post error, I'm confident would see both Shrine cabinets swung-open. Unfortunatly, Lisa couldn't understand that she had to move towards the object, and going back to the Cave of Size made the most sense for the "Cool Customer".