I'm not a great fan of the stories that Gatis has brought to the series. But in his favour, if you see what he did with "Adventure" then it had loads of heart and a good attention to the proper balance and 'heft' of a character. He did a really beautiful job there of fleshing the characters out and making them feel like real people. If he can bring that to the table, he is more than welcome!
Remember that being a showrunner involves an awful lot more than just writing clever plots and dialogue.
EDIT: Didn't see clair2281's post - Whithouse would be brilliant.