Things I like the most: deffinitely torso. Perfect use of Huna. Also, these HF parts making spine looks just great. And great use of Slizers heads. Hands are really nice, they just needs more fingers. It is still nice seeing original hands not being completely taken from Hydraxon or Toa Mata Nui. Big + for good color scheme.
There are some things that I don't really like. Neck looks a bit too long. Feet looks completely ignored, like "custom everything, leave feet", that's kinda awkward.
And some personal things: I think original Antroz' wings would look much better. It is something characteristic for him. Also, it is sad that Antroz doesn't have his blades. And last thing - forearms and thighs. What's wrong with them - actually nothing. But... I can't count how many times I saw this construction, that's nothing surpricing.
However, I think whole MOC is very interesting and really great done. And the most important - he looks very neat. I think it is good 9+/10 for this MOC. I'm waiting for Your next MOC's, greetings!