Hello Juf,
At this time the Navigator pane simply displays information on whatever currently has focus. If it happens to be an image file, it will display that, if it is the source file, it displays the outline. The asset preview portion will get a rehaul soon with sound preview added in. If we do make it a separate window (apart from the navigator) the question is where to put it? Multi monitor setups would be ideal for this but on a single monitor things might get a bit tricky.
How about a step back. What problem are we really trying to solve? Do you want to quickly preview assets while coding? How about this solution:
http://view.xscreenshot.com/1aeec3f1ee18992c05fa1fdb7cada03e
what is the difference between the files and the projects pane?
If you use file aliases for instance you will see more things in the projects pane. In the future we may add more things like globals under each lua file node. In these cases you might just want to look at what is physically on the disk, thats what the file pane is for. The Files pane is a literal view, the projects pane is a more high level logical view.
Regards,
M.Y. Developers