I did read the rest of the thread and now that you mention it, my initial question was a bit confusing and misleading. I knew there was someone who still works on this, I was just surprised that this didn't get more attention and figured that something might be wrong with the mod.
I didn't know that Kethane or something similar is now actually a stock part of KSP, I will have to read up on that. Thank you for your quick reply!