Keep in mind that credits can sometimes be deceptive. We don't necessarily know who is taking on what role or what that role will look like. There will be teams collaborating with one another. Sometimes people are credited in name only. Sometimes people can take on more than one role. This can get complicated. But it is still possible to go through someone's library of work and determine whether or not they'll be able to deliver.
Unfortunately, we don't have a lot of examples for the show's creator and writer, Diane Ademu-John. She's been working as a producer since 2013, and as a writer since 2001. According to IMDB, she is known for 'The Haunting of Bly Manor,' 'Empire,' 'The Originals,' and 'Medium,' all of which have their ups and downs, and she's only written a few episodes of each series. In order to fully understand what she's capable of we would have to go back and watch them, and even that might not be enough to get a clear picture of what to expect. She does seem to be a consistent, influential figure in the new series, so a lot is going to rest on her.
She will be acting as co-showrunner along with Alison Schapker, who has some serious credentials. She wrote some of the best moments in season one of 'Westworld,' a sure sign of skill. If that's any indication, she should be capable of the Bene Gesserit's characteristic multi-layered dialogue and strategic thinking, based on the sisterhood's enhanced powers of perception. It takes a certain kind of person to write those moments properly, and they are essential to accurately depicting the sisterhood. She also wrote some of the best episodes of 'Lost,' 'Altered Carbon' and 'Fringe.' None of those series are perfect, but they are known for showcasing genius in some way. Sounds like we have a winner. Check out her full credentials here. Johan Renck will be directing the first two episodes. He is highly sought after. He's worked with music titans, like Madonna, Kylie Minogue, and Beyonce, to direct their videos. None of them are perfect, but his skill was evident in the visual style. He's also directed some of the best moments in 'Breaking Bad,' and he won an Emmy for his work on 'Chernobyl.' His history is not as simple to read as Schapker's; it's patchy, and there are a few flops, but considering his experience, he sounds like he might be up for the job. No information yet on who else will be directing. In my opinion, if Schapker is a regular presence, the series has a run for her money. Her work really stands out.