Have a look at this video showing Optimus Prime transforming in Age of Extinction; a good portion of the rear section of the truck cab essentially gets swallowed up into his back!
This is obviously just impossible for HasTak to translate as a toy. Overall I think that HasTak have done a commendable job with Generations Leader Optimus Prime; the roof panels divide and form the shoulder pads as they do in the film, and they've managed to get a lot of the front part of the truck cab to fit inside the legs. Okay, the rear of the legs don't look screen accurate (aww, no Astroboy leg jets), but it's easily forgivable considering that these parts have to go somewhere on the robot! The unsightly backpack kibble appears to be an inevitable by product of this screen model which defies toy design. But these parts have ended up being carried on the back, rather than inside the back. I really hope that the TF designs for the next film end up being more toy friendly. The designs from the TF1, ROTF and DOTM were a lot more toy friendlier than AoE, as we can see from the previous Optimus Prime design and resultant Leader Class toys.
Yep, definitely not worth paying full price. We can see that the Generations Leader toy does do a better job of that than the First Edition Leader, but ultimately I think having some form of backpack kibble seems to be unavoidable due to non-toy-friendly nature of the screen designs.![]()