I'd definitely agree that Resurrection has the weakest Alien design of the proper Alien films, though I do personally like it quite a bit within the context of the film.
But I more so meant the actual craftsmanship of the suit, and the execution of it on set, as proof of their abilities. The design, on the other hand, I would attribute more directly to Jean-Pierre Jeunet, who gave them the guidelines for what he was looking for in the design and approved that final rendition of it.
If ADI was working with a director who wanted to do something more Giger-esque, I have no doubt in my mind that they would deliver on it.