Permission to se other personal folders

I've modified line 433 of imce.module to create a folder identified by the username of each user:
$dir = file_directory_path().'/'.$set['prefix'].$GLOBALS['user']->name;
Now, I'd like to know if there's a way to make these folders visible to every user. I've thought to set up root folder for every role, but in this case a personal folder wouldn't be created, and I really do need it. Any help / suggestions?