Biggest problem with Mad Max is dredging too much from the Ubisoft school of open-world game design. Ten years ago that's perfectly fine, but especially recently Witcher 3 has raised the bar so high that just copy/pasting content to fill up a game world just isn't going to cut it any more. There's no character interaction, no backstory, no player choice...you fight some guys, collect the scrap, and that's it.
I still like that game, though, don't get me wrong, but it's a bit disappointing compared to the joyful mayhem of Just Cause 2 and the action brilliance of Fury Road.