It would be nice if we could change the text style, but exclude some options for example the justification of the text.
We sometimes have the case that we have to change the text-style but there are many texts with all different justifications and the justification should stay the way it was before, because the texts are placed accordingly.
In my head it looks kind of the same as the "change text attributes" dialog nowadays, but working the other way around. You choose the new text style and then have some tick boxes where you can choose to keep the justification (or something else) untouched.