I HIGHLY doubt they're scrapping the Tier 3 robot. I mean, what would they replace it with? Not to mention all of the programmer's weeks/months of work down the toilet. They needed to start somewhere for follower code, and this is the start.
Does the collision system in A20 mean that there will be visual damage to vehicles when they crash into objects? Or does that just have to do with the ISS for vehicles (burst tire, damaged radiator, etc.)?