Hi Nico,
I'm coming to the end of a pretty intense contract and haven't had time for my side projects. I'm still intending to maintain this, but I have about another week left before I can dedicate some attention to my Arch package again.
Looking at the issue you've opened on ArangoDB, it's great that you've got some plans to improve things. I'm totally interested in making this more "the Arch way". I've asked for code review on the #archlinux IRC before and never got any issues raised, so it's good to finally get someone with some concrete suggestions.
I've added you as a co-maintainer so you should be able to update the arch package, but please lets coordinate via the github repo.
Let me know if you have any questions.
Mike