Something I just thought of, and thus haven't tested yet, is that there may be a way to scale the actual mesh which autoloads use (in the NIF files). If it uses a standardized 'marker' node and not some kind of invisi-trigger/collision mesh, then I doubt it'll work. I'll see if I can find anything more about this, as now I'm curious for my OWN needs heheheh. If it DOES work, the obvious limitation would be one would have to have separate NIF files for each different size (which really is not a big deal at all... just extra files to include in the download).
That's an awesome idea. I'd appreciate it if you let me know how this turns out. I'll defer to your presumably greater NifSkope experience before I start fumbling around in the dark with this. I only need a single smaller size so packaging extra models is hardly an issue.
Unfortunately for the aforementioned work-around, the layout of my room is pretty restrictive so I don't have a lot of freedom to move them around. They are both near the middle of my room which means their green belts overlap (intolerable), so moving them as much as possible into an available wall and ground hasn't improved the situation.
*EDIT: With picture. You can see one load door on the upper right (scale 1.0) where the green belt takes up far too much space. Simply moving it back further into the wall is not viable as then the player cannot access the actual teleporting trigger zone. The door on the lower left shows roughly the ideal scale (0.XX, can't remember the exact scale)
http://i101.photobucket.com/albums/m57/will_cuthill/Auto-LoadDoors.png?t=1350705444