i had to pester gog support and ubisoft for years until they updated rayman origins for gog. i know it's not convenient but maybe we should pester techland too
I just received the following e-mail from GOG support, and the offline installer does appear to be updated. Does anyone want to test it out?
Sorry for the late rely. An updated version of the game is available it should unlock the Content Drops items by default.
Here we go again ;) Will try it and post.
Edit: The changelog makes me a bit sceptical though
"Update Content Drop #10 hotfix (28 November 2018) Minor
But maybe we will get lucky.
Edit: First step success - completely offline, DLC still shows in the "What's New" List. Now I have to play the prologue - offline.
Edit 2: I am able to switch to the Badlands Rider clothes tab the moment I am able to access my stash and at start of the game it says "you received a new outfit". Still cannot change to it since the prologue is not over yet - but it looks REALLY good. No Galaxy Service and no connection at all!
Just to be 100% sure I will still finish the prologue.
Edit 3 (Final): Just finished the prologue - no Galaxy - no connection - DLC unlocked and I just changed into Badlands Rider Outfit!