Implementation of hook_file_default_displays() {media module} makes it impossible to export image display settings via features This is a issue I am dealing with for days.
It looks like is related to: https://drupal.org/node/1702700

I've created a feature relying on media, file_entity and media_youtube, vimeo... whose main purpose is to embed youtube, vimeo videos etc.

I've correctly set up the file_entity displays weights: 
Structure » File types » Video » Manage file display
so that the thumbnails shows ok 

    e.g 
    "Large filetype icon"   weight: 50 
    "Youtube Image Preview" weight: -40.
    {GOOD}




After complete feature export,
"Large filetype icon" weight: 0 
"Youtube Image Preview" is set 2.
{WRONG}


I even edited manually the feature's .info and default_displays.inc file with no luck.

Secondly, there are also feature overrides unable to revert.
It looks like somethings alters the file display weights.
The problems comes from the heart of Media module which programatically add default overrides.

I have managed to solve the problem in 2 steps:
(1) Sunk the Media Icon to the bottom

apply a patch to Media module:

--- sites/all/modules/contributed/media/media.module
+++ sites/all/modules/contributed/media/media.module
@@ -1082,7 +1082,7 @@
   $file_display = new stdClass();
   $file_display-&gt;api_version = 1;
   $file_display-&gt;name = 'video__preview__file_field_media_large_icon';
-  $file_display-&gt;weight = 0;
+  $file_display-&gt;weight = 50;
   $file_display-&gt;status = TRUE;
   $file_display-&gt;settings = '';
   $file_displays['video__preview__file_field_media_large_icon'] = $file_display;
@@ -1093,7 +1093,7 @@
   $file_display = new stdClass();
   $file_display-&gt;api_version = 1;
   $file_display-&gt;name = 'audio__preview__file_field_media_large_icon';
-  $file_display-&gt;weight = 0;
+  $file_display-&gt;weight = 50;
   $file_display-&gt;status = TRUE;
   $file_display-&gt;settings = '';
   $file_displays['audio__preview__file_field_media_large_icon'] = $file_display;
@@ -1104,7 +1104,7 @@
   $file_display = new stdClass();
   $file_display-&gt;api_version = 1;
   $file_display-&gt;name = 'document__preview__file_field_media_large_icon';
-  $file_display-&gt;weight = 0;
+  $file_display-&gt;weight = 50;
   $file_display-&gt;status = TRUE;
   $file_display-&gt;settings = '';
   $file_displays['document__preview__file_field_media_large_icon'] = $file_display;


(2) I exported my feature but manually edited the File Display like this:

YOURFEATURE.features.field.inc

For Default the order is

Vimeo 
Vimeo Preview 
Youtube 
Youtube Preview


For Preview the order is

Vimeo Preview 
Vimeo 
Youtube Preview
Youtube