I have had this exact problem/need overtime on several projects, and it doesn't mean "we didn't think this through much". Products change/grow and there become

I have had this exact problem/need overtime on several projects, and it doesn't mean "we didn't think this through much". Products change/grow and there becomes a need for tens of different images. First it starts with a thumbnail or two, then composite images, then, etc. Not to mention you need 2x images for retina devices. Bottom line, overtime you tend to understand that there is great flexibility in this type of architecture.