Feedback:
New character heads are far better. But probably even better if using the battle heads, or as close as possible (I assume you aren't). Cloud's is still a little fat compared to the original battle head and so on (making him look less like a warrior, and more like a child who has never wielded a blade).
Barrett's eyes are missing.
Red XIII has missing body parts
Sephiroth's arms look weird when he walks (but a BIG improvement with the proper face and new hair, although the hair needs some fine tuning because you can see it doesn't go with the body. You can see its attached as a separate thing. Colour issue again probs.).
Finally, because the head is different to the body ( colour), Tifa looks very weird in close ups. To be fair, the new body is too high res to look part of the game. I remember Squallff8's Tifa looking like it fit the game more.
It's a definite improvement so far.