Edit Multiple Thumbnails at once

Any way to edit Multiple Thumbnails in content browser in 1 go ? for example I have 1000s of material instances that need to have a cube displayed instead of the sphere. and would like to adjust the camera position as well for all selected items. are there any shortcuts for doing this instead of 1 by 1 ?

I don’t think there is a way to do what you are asking. Would be nice to have material instance previews mimic their parents.

I would also like a mass editing feature for thumbnails. Or at least a setting to define the default angle for all new thumbnails. Working with hundreds of assets can become very tedious.