How to set a master Image as a component and update it across all instances

Im setting up a system to quickly update a whole set of design files (Adverts) and im mostly there. The main issue im having is the best way to set up a master background image for all the ads. I’ve tried components and an Image Library. And both methods have their drawbacks. I ideally need a master image then be able to override the crop of all each reference individually. But then I’d like it to update to the new image when the master has been updated. I don’t mind having to adjust the cropping again.

Does anyone have any good solutions / tricks for this?

Use a main component for the image, then crop it by putting it in a frame with clip content and resizing the frame accordingly.