I don't see Hisuian Pokemon being used but yeah, Goodra would be great.I would prefer she used the hopefully evolved Gible and her supposed 6th Pokemon.
Here I would hope she had Hisuian Goodra, although not sure how that could happen. I wouldn't want Iris to have these almost-Dragon types as she is now a Champion who specializes in Dragon types so we need to see dragons.
And don't get me started on Lance and his Flying Master Skills. If he didn't have Charizard I would be okay. Giving him Charizard and calling him flying types is a sin
Personally don't want another Garchomp as we're going to have Cynthia's Iconic Garchomp and now Paul is also likely going to have one in the upcoming episode. I think a Hydreigon would be better.
Iris in the games like Lance, also uses non Dragon-types that resemble Dragons. Personally, I'd prefer team diversity versus monotype teams as most of Ash's challenges in Master Class already, were against Monotype teams.