Acrobat interface ergonomics
I come from a prepress background, where many professionals stayed with Acrobat 9 for years because Acrobat X and everything that followed felt much less professional and, above all, far less ergonomic.
Since I now have no choice but to use the current Acrobat, I would like to ask for one basic improvement: please reconsider the placement of panels and tools, or at least allow users to freely rearrange them.
Page-related controls such as page numbers, page navigation, zoom, and similar tools should not be forced into the bottom-right corner, while thumbnails, layers, and other panels are placed far away in the top-right area. On large high-resolution monitors, especially 3300 px wide and above, this creates constant unnecessary mouse travel across the screen and makes everyday professional work slower and more tiring. Or at least let users assign a robust set of custom keyboard shortcuts, similar to Photoshop. The current fixed panel placement is simply ridiculous from the perspective of daily professional use.
I have many other comments, but this is the essential one: users need to be able to organize palettes and tools so that frequently used controls are close together and suited to real production work.