Icon Theme spec question

[Brian Mattern]

According to the latest Icon Theme spec:                                          
                                                                                  
  Icons and themes are looked for in a set of directories. By default,            
  apps should look in $HOME/.icons (for backwards compatibility), in              
  $XDG_DATA_DIRS/icons and in /usr/share/pixmaps (in that order).                 
  Applications may further add their own icon directories to this list,           
  and users may extend or change the list (in application/desktop specific        
  ways).                                                                          
                                                                                  
I know that Gnome at least keeps icons in <prefix>/share/pixmaps, and             
then includes this dir in their search path for icon images. So, on a             
system that has Gnome installed in e.g. /opt/gnome, with                          
/opt/gnome/share in $XDG_DATA_DIRS, an implementation that includes the           
required dirs (and no more) may use Gnome's menu, but not be able to              
find the icons located in Gnome's pixmaps dir.                                    
                                                                                  
Would it make sense to require $XDG_DATA_DIRS/pixmaps as an additional            
fallback to handle installations outside of /usr?                                 
                                                                                  
Take care,                                                                        
Brian Mattern