Nice, another red and black beast.
You can shave more material around the gearboxes.
We had a similar shape this past year and just had the minimal material of what we needed since the top gears were pretty well hidden inside of the robot.
Here is a side view, with two of the standoffs missing. Saved 1/4 lb overall, seems small, but that coupled with 6 lbs, we were able to calculate where we needed to add more weight to make cog right on the center wheels with the ball on the robot.
What program did you render it in?