There may even be a good coding analogy way to think of this. Consider that the user base already has a set of pre-installed libraries and callable routines fo

There may even be a good coding analogy way to think of this. Consider that the user base already has a set of pre-installed libraries and callable routines for most UI functions. These were effectively created by MS and Apple by their design process, and installed in the user base by endless familiarization, then extended by Apple & Android on mobile devices. Those libraries are now well embedded and installed. Make calls into those existing libraries. Don't force the user to rewrite and reinstall new libraries (unless absolutely necessary).