Made a bit of progress on the head, got the DA details off and added a few bits. I also think I found the right position for a good menacing look. I even started sculpting the head - honestly my sculpting has never been advanced so it will be interesting to see what it will end up looking like. The hose is not positioned as it will be in the end, just wanted to give an idea of what it will look like, with hoses and cables attached in various places.
I was not planning on adding a hood, but it seems to be a popular idea, so perhaps I'll give it a go after all. I've have also warmed up to Dave's suggestion of a cowled lot of lenses, so perhaps the Herakli will not have the same type of heads after all.