Essential graphics should have a function to replace an image inside the control comp.
I'm working on a large ongoing project that requires a lot of title animations with different text and images. Essential Graphics has helped but could be improved vastly if there was some sort of "placeholder" layer inside a composition that could be used to swap or select different images inside of essential graphics.
Sebastien Perier (AE Quality Engineer) commented
This functionality is available on the public beta versions of After Effects and Premiere Pro. You can learn more about it here: https://community.adobe.com/t5/premiere-pro-beta/discuss-media-replacement-for-motion-graphics-templates/m-p/11507979?page=1#M1040
Hope this helps,