absolute important for engravers and publishers...!
The major publishing houses estimated hundred (and more) years ago have to deal with reprinting, re-publishing their old music.
In the romantic era it was quite common to write ie. 13 16th in time of a quarter. I have seen this too often to call it a minor effect...
The best would be to give the user the possibility to to make a "this instead of that"-decision ie.
14 16th instead of 2 4th with or without bracket and number.
This is so important when it comes to "Urtext" that Sibelius with its poor workaround will never have a chance to be used for this kind of work which means in fact publishers like Schott also will not use Sibelius
for other jobs as well.