And if they're going to be re-added in the not so distant future?
If anyone already asked support and got an answer, feel free to share what you've learned.

In case you're not aware - we're talking about:
-wallpapers
-avatars
-the soundtrack
-and the manual

It's still there, as pointed out in this post. The remainder of the removed extras, as again mentioned there, are not.

a friend of mine made a backup a few years ago where all was still there from some of the extras.
he gave it to me and i uploaded it to my onedrive.

here is the link:
https://1drv.ms/f/s!AnX_9Wf4LFMHiDrbHHC3V_1B6wvB

included are:

-avatars
-manual (only english)
-soundtrack
-videos
-webkit
-wallpapers

You can say "user I don't know in any sense uploaded all bonus content to torrent and/or non-sanctioned download site". It's okay, no one will judge.