There are definitely some weaknesses here. I particularly notice this with rehearsal marks and system text.
And in a perfect world where anything is possible without unacceptable development cost or performance penalties, it would be really cool if, when we manually move an element in ENGRAVE mode, the casting off process would recognize this adjustment and rerun its automatic layout to account for the possibility that I have just relieved a collision.
Again, this is most evident to me with rehearsal marks. They can often force adjacent systems to be placed way too far apart in order to make room for a rehearsal mark that is in a bad place to start with. But when you manually fix the placement of the rehearsal mark, the staves remain spaced too far apart. So then, you have to go down the rabbit hole of manually adjusting the staff spacing and before you know it, you are fiddling with many objects manually.
This sounds dire, but honestly, I have found a combination of settings that look good and donāt really require much manual editing. It wasnāt obvious, and I had a lot of frustration before I eventually got it settled out.
One thing I have noticed is that, if it is convenient for rehearsal marks to come at the beginning of a system, there are fewer spacing problems. That isnāt always possible or desirable, of course.