I agree, this figure took me by surprise. I expected the engineering to be a bit on the simple 'shell cape' but that's not the case here, a nice feat of innovative engineering.
I was amazed at how there is hardly any undercarriage with the alt mode being almost flat. I was blown away when the wing bits opened up to reveal the weapons. I thought the weapons were going to be a non transforming Fracas but it seems like a completely new weapon that splits in two.
The only thing that I found a bit odd is that the landing gears seem to be backwards (two wheels at the front, one at the back) which would make a pretty difficult landing and take off but aside from that, it's superb.