The helmet is nice. Will be made of fiberglass, wish they did it in ABS, even if not in two halves like the screen used one, the interior is fully padded, thus not accurate. The price is quite high too. I think I will get this. Will be looking to see how high the weathered Legend will be priced, not that I'm interested in that.
Not sure if eFX will make an AT-AT Driver, but they have the opportunity. They will have to make it from a TIE Pilot helmet (there are some in ILM Archives) but many of the cool greeblies they will need to make from scratch, since no original AT-AT Driver survived to this day alas. And they really need to make those greeblies well, because without the greeblies the AT-AT helmet is just another TIE lid painted white or gray.
