as i played with the JVC doors and buttons, i found myself thinking of things i wish existed for it.
1. a few smaller sizes, this could result in interesting possibilities.
2. a cabinet drawer, just the sliding part itself, it would activate and come forward to an acceptable distance.
3. secret compartments. various regular looking objects that can be moved to reveal passage ways.
(i know we have the bookcase door) for example, a painting. if activated it would slide to the side (staying on the wall) and reveal whatever was behind it.
4. "trap doors" one of these would be great. while they can be easily created with events, a real trap door with mesh would be great.
the difference between a "trap door" and the man hole cover, sub hatch, or the other downwards doors, is that the doors we have are very easy to NOT fall into.
a trap door would swing open with incredible speed, and be set up so that players would actually fall in.
don't flame if some of these have been recommended before (you can tell me tho)