Hello! This seems a popular topic recently, we've discussed this a couple of days ago here as well: Content Management / Collaboration
I personally think GIT is ok once you train the people, and yes, we artists are generally strangers to it but hand us a guide with screenshots and steps and we should be good >😃
As you'll read in the post, we're thinking about ways to simplify collaboration, so if you have any input, we'll be happy to hear about it (: