Two episodes into Dune Prophecy and I'm still undecided. However, I really think you need to give a series like this some time.
Some similar series take 5-6 episodes to hit full stream. So many characters to introduce and so much world building to do.
Don't like that the set the series 10,000 years prior to the movies. This seems like an absurd abmount of time. Think about how things have changed on earth in 10,000 years.
But, this is a minor quibble.