The new print panel will give you the option to keep the proportions of the original score instead of rearranging the staff systems for the chosen paper size. This feature is useful for graphical scores where Picster elements are carefully positioned, and rearrangement is not desired. My student Luong, Hue Trinh has created a remarkable graphical score with her own svg objects taking full advantage of the new printing features:
Click on link to download the entire pdf BTM2FINAL-Maxscore.XML.
Note also the non-standard clef which has been created with the new clef designer: