I use GoodNotes 4 on my iPad mini 4 and love it. GoodNotes 5 however has this HUGE toolbar that gets even taller when there are open tabs, wasting a lot of my valuable screen-space. It takes up a solid inch of my 6.25 inch display. If it could collapse or otherwise be made closer to the height of the GoodNotes 4 bar (~5/8 in) it would remove one of my major blockers of adopting GoodNotes 5