"Just" changing a few settings is straightforward for me. Have done it for years.
But the bugaboo is that we expose lots of undergraduates to Maple in our calculus sequence. Every year when we have yet another version (15?). The we have to communicate settings for preferences to IT. And then students buy their own editions, and get confused.
It's just a never ending battle and nuisance to try to get everybody to calibrate with classic, or with standard/worksheet or with standard/document/1D, etc.or with some other bifurcation.
Having two parsers is madness, to say it mildly. As a faculty and instituion, we are clearly migrating to competitors. Personally, as a long-time user of Maple, I am sorry to say that I see the wisdom in this evolution.