Any suggestions: Snapshot feature

Hi,

I don’t know really where to make suggestions for improving UE4, maybe you can help me out.

But for now I will write my suggestion in here.
It would be great, if the individual editors would have a small snapshot feature.
The point is I currently making some material and tried out, if I shall use a specular map or work with roughness.
An integrated snapshot tool would help to compare the different states of a material.
Of course I could use multiple material editor instances, but that can be confusing quite fast.

Thanks.