[Martijn]

To save space in skins there was mentioning some time ago about making a separate add-on for the mediaflags used in skins. That would save 20 MB alone in our case. Only disadvantage is that they arent in xbt anymore then. Backgrounds account for another 20 MB in Nox and are outside the xbt anyway. Maybe we can make a sort of background pack as add-on.

flag packs could still be possible within current Eden code. By creating a script that downloads them on first start and it save them within a fixed location in the addons folder. Or directly in the skin folder.
Problem is that on update all off the content is removed and you would have to download again. So it should be a folder in where the addon settings are stored.
With some work this could be simply achieved and save all skins that use those flags about 20megs.
Once the API from fanart.tv is up i can directly download the images that match the naming convention of MusicBrainz and push that into a .xbt which could then be downloaded by the script (or as loose images). Same will be in couple of weeks for movie studio flags that will match the namings on themoviedb.org.
So there will be a central location where you can get your flags from.