Show megapixels/remaining megapixels from cropping and camera used in viewer or even a more customizable viewer

What problem do you see this solving?

It would be nice to see what camera was used especially when there is multiple cameras being used

and when cropped to see whats remaining in terms of printing for those that print

When was the last time you were affected by this lack of functionality, or specific tool?

while it hasn't effected me personally I find it would be a cool feature. I recently updated to a z7ii from a z6 and it would be cool to do comparisons quickly when comparing old photos