I'm coming from using Norton Commander for Windows for a lot of year now, and i loved because it didnt use any icon's in its listing, it was able to display items with 12 a 13px, instead of the 18px that now is needed. Lowering the font size has no use, sinds the icon's are fixed. Or at-leased the ability to replace the system icon's with a default empty one of maybe 12 by 8 ( 8 width to prevent the file names from being to close to the border ).
If you run a resolution of 768 in height, every pixel counts
Lets see, what else?
O yea, the ability to Close or Hide SS when running a editor & return to SS with closing the editor. This is again a old preference of mine. In NC for windows, you open a internal editor with F4, so, you can do quick editing by quickly navigating to a file, pressing F4, do your changes, and pressing ESC, plop, back in the file navigator part of NC for windows. Combined with 2 or 3 open NC for windows, i can fast forward ( and alt-tab ) between files at lightening speed.
While i'm able to reproduce part of the effect by using PSPad as editor, and enabling ESC in its options, its still troublesome that now you have not 3 open editors/file managers, but 3 editors & 3 SS instances. Makes quick alt-tabbing rather troublesome, because i keep losing what editor or SS is where ...
Why use 3 file managers? Because i'm editing files most of the time in 3 different points in a file tree. And if you need to use one instance to keep focused, you lose a lot of valuable time moving between several rather deep directory structures. And keeping all the files open in a editor is a even larger mess, because the editing is between a dozen or more files at a times.
Sorry, couldn't resist although I'm no better; used "NC for dos" until the long file names became a problem. Then found SS.