There's a lot of things that Greenlight could have done better. I worked with them during the development of the TTA model, and trust me it's 100x better than what it would have been. Unfortunately, they're a low cost medium volume model producer working with a Chinese manufacturer. So there were a lot of things that came down to the time for revisions, the manufacturer not following directions correctly, tool and die and material costs, and then they were also in the process of expanding their business at the time. If it would have been someone like Replicarz or something similar with a $300 price point we could have corrected some of the minor faults on the final production model. However, with it all said and done, for a car built for a small audience I think they did a great job.
In case you're wondering some of the issues they had when I started working with them (this was after several revisions already):
Dash color was wayyy off
Door panels were all light tan
Wheels the wrong color (shiny gold)
Some wrong colors under the hood
Looked like a 4x4
I think we adjusted the overall dimensions some