"thiswad" and "iwad" for MODELDEF

[Guest]

For brightmaps, the "thiswad' and "iwad" keywords prevent conflicts with actors that may be overridden by another map or PWAD. This makes autoloading a brightmap set safer.

I would like to request that similar accommodation be added for 3D models. Currently, autoloading a model pack is risky in the event that a PWAD expects to change the actor's sprites, since 3D models override sprites regardless of load order. I would feel safer if I could ensure models only override IWAD sprites.