Regarding the Mad Knight stuff: If you send him a message on Facebook he'll probably sell you them. I bought a full set of trolls and trollkin and they look absolutely excellent and fit the part.
You'll definitely do a much better job of painting them than I eventually will.

Not a huge amount really, I like the way it plays and its based on 7th Voyage which is also mythic bronze age. So far the only concessions are to ignore the hero/villain and just make up the casts to suit the models and their rune cult, and create a Chaos ability.
I was going to do sorcerers and fiends as being unable to be taken by anyone not Chaos-aligned but other than that I wasn't going to change much either. I have some ideas on what changes could be made, though.