From what I've read, they don't seem to have promising credentials... The main writers are J.D. Payne and Patrick McKay.
Supposedly, Peter Jackson and some of his team were going to review stuff and offer advice, but that's it.
Some people who have fears about too much Game of Thrones-like material could be on to something, since the GoT producer Bryan Cogman was supposedly brought on to advise.
I'm not sure who I'd want to help out, but maybe someone who worked on The Witcher or at least something like that. Unfortunately, there are very few pure fantasy shows on TV, with most being more the "urban fantasy" style.