Frictional Games Forum

why not make it so that the users is able to fly around (or zoom whatever) in the model viewer?

You can, this might not be documented though.

Model viewer:
Left mouse: pan camera
Right mouse: Click and interact with objects
Middle mouse: Zoom camera
1: Shadows on/off
2: Show colliders
3: Reset model to center
4: Flip between different animations
5: Stop the lights from spinning
6: Show bounding box and bones if any.
B: Bloom on/off

Scene Viewer:
A,W,S, D: Move around
Mouse: Look around
1: Shadows on/off
2: Show portals and rooms
3: Show light radius
4: Show colliders
5: Show bounding boxes
6: Show sound collision
7: Show what the game renders for the current view.
B: Bloom on/off