File explorer should be based on the OS's explorer
Is your feature request related to a problem? Please describe. I think it would be better if the file explorer should be based on the OS's explorer. For example, when I need to open a specification file, I need to get to the folder which contains it. The current GUI has nothing better than the basic Windows GUI, so I think we should reimplement it.
Describe the solution you'd like There should be a proper (explorer) GUI for the open/save specification method.
Describe alternatives you've considered In case the developers intended to have a ubiquitous GUI, I hope there would be an option to choose the Windows GUI if the user is using Windows, ect.
Additional context
Example of "Windows' explorer"
Example of "USE explorer"
USE is using a Swing JFileChooser for this and this is the default look & feel of it.
To use the file chosse specific to the OS, just a small would be needed (c. f. stackoverflow):
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) { }
Unfortunately, this changes the complete appearance of USE:

On some systems with different screen resolutions I noticed some silly artifacts, e. g., incorrect icons and tree images. So, further testing is required. Maybe in combination with a startparameter to fall back to the "original" appearance.
Preview: https://github.com/useocl/use/suites/11113597098/artifacts/566229556