Navigation pane - page thumbnails
Along with being able to customise (personalise) the "Quick tools" and change an extraordinary amount of settings in the program preferences, the ability to save the layout of the 'workspace' so-to-say should be possible.
In particular, the 'Tools pane' and the 'Navigation pane' - show/hide setting should be persistent.
This assists with productivity, and User eXperience.
Since we Haven’t Heard back from you for so long, We are closing this issue.
Please feel free to reach out to us for any other concerns if you have,
Thanks for Reaching out to us for your concerns.
I would like to let you know that that Show/hide setting for Tools pane is already persistent in the latest version of Adobe Acrobat DC.
If for a session, you've collapsed the tools pane, then from next session onwards, it will appear as collapsed for every pdf launch.
ForShow/hide sessting of Navigation panes, if you wish any particular navigation pane to be open for you for evry pdf launch, you can open that navigation pane in the navigation strip -> Right click on the navigation strip and select "Pin ...." to pin that navigation pane. this is how that particular pane will always appear as open for you for every pdf launch.
Let me know for any further ask here ?