For directory structure category displays i think it would be more intuative to have the first item in the list be a "up a level" entry.
When people use xlobby at my house they never knopw how to go back a level when (for example) the are looking at photos.
Also it would free up a button on the skin...
I just kicked a screenie off xbmc what shows exactly what i mean.
http://xbmc.sourceforge.net/imgs/xbmc_a ... yhem16.jpg