Thank you so much for posting those pictures, Shaggy! They're really fascinating.
I actually contacted R&R Designs a couple years ago, asking about Phantom Theater and Adventure Express. I received a reply with the following collection of pictures attached.
All photos courtesy R&R Designs
Breaker board and animatronic shown in HWBeast1039's original post
Characters have, I believe, been part of Haunt decorations before
Furnace now part of Slaughterhouse, animatronics have been part of Haunt before
Mummy and gargoyle have been part of Haunt before
Usher has been part of Haunt before
Chandelier shown was used by Fairfield High School for their performance of Phantom of the Opera a few years ago
After showing him (R&R's president) a picture of the characters' current fate (outside as Halloween props), he responded:
Thanks for the photo, those characters were really made to be seen in the dark under proper show lighting, it's a shame to see them thrown outside in a pile.
Of course, you could argue that setting them up outside is still better than simply throwing them away. I definitely enjoy seeing them every year, although I wonder how many seasons they'll last.
Oh, a question that somebody may be able to answer... Phantom Theater consisted of 30+ characters, including repeats (as Shaggy's post shows). Only a limited number are placed outside each Haunt, so what about the rest? Are they all in storage somewhere, or were they scrapped? Or something entirely different?