Even as someone that by and large likes Blomkamp (Chappie's pretty great, actually!), this wouldn't have been an interesting move for the franchise at all in my opinion.
I'm really into the design of most of the human tech here, like I said, and I really do hope that Blomkamp finds a way to bring some of this concepts to life down the line in a different project, outside of the Alien universe.
I'm going to keep following his career with interest for sure, I'm just glad that his career and Alien didn't end up actually intersecting.