It is quite possible but it will take coordination, engineers and money. I say possible because ImageMagick has been a part of Photoshop for many years. PS is successful because it is composed of many components contributed by hundreds if not thousands of people over the years.
@Hale Welcome to the forum! If you desire to see G’MIC paired with Photoshop and other apps, perhaps consider donating (Now you can support G'MIC financially by donating!) and seeing how you could contribute as a volunteer.