Some examples to show this issue :
Top is the way I provided the scene , bottom is how the scene thumb now looks on sketchfab due to the view being changed.
another one :
Same thing here ( although in this other things were changed on top of the view angle… sigh haha )
Anyway the point of the two samples is just to show that users save different start view angles and while it might be a better choice when the model is loaded in the viewer , it is not always the best choice in regards to a thumb view.
EG I know the logic behind the switch model been zoomed out , the model had animations on the controllers and this new view they chose gave more space to see those animations by default, but it also resulted in a less tasteful thumbnail.