Yes, this would be an unbelievably helpful feature to have.
For example, I am building duplicate websites for some affiliate marketers. Basically, I just duplicate the website each time. I am using your plugin to store all of the affiliate product links, but right now I have to go in to each and edit them with each affiliate’s ID. Whereas, if I was able to embed a shortcode within a shortcode, I could create one shortcode called ID and then just embed it into each link. From there, I could just change the ID shortcode and it would update all the links!