some more TFA-y Greenthumb and Concrete designs. I could never abandon my boys~
Greenie slimmed down significantly and now has a French/English 17th-18th c aristocrat look to him that I thought better suited his general personality and demeanor, not to mention a simplified / streamlined look from the more G1 boxiness he had before. I don't think I kept a single feature beyond the wheel hips, color, and propellor loincloth.
Conk is almost exactly the same. Seriously. Minor re-placement of the decepticon logo, less detailed shape, and minor alterations to his claws and jaw structure. Other than that, completely the same.