I want to expand on my answer/post so that it is not misconstrued as a bash on Nicklaus design, because it's not.
One of my very favorite golf courses in a mountain setting is Mayacama - damned good
One of my most favorite if not my favorite desert courses is the original JWN in AZ - Desert Highlands great strategies, land use, flow, etc.
Having said that, mountain and desert golf have severe and unavoidable inherent limitations placed upon them.
Desert Mountain Outlaw is held out by Matt Ward as something really special. It is full of way too much containment, too much sameness, little real creativity to be of the calibre he assigns it. Also, it is not of the calibre of design excellence as either of the two JWN design teams courses that I mentioned above. It does have a "core" layout going for it.
Considering all of that I really enjoy playing Nicklaus courses any time, any place (e.g. Right in Las Vegas, Reflection Bay is certainly better than the Falls on-site and others around, pick your own favorite, though) and I have played a ton of Nicklaus.
SO
I think given:
Desert, mountains and the size of this project it will be very interesting. I think the more architects, the better to get many different takes on these limited grounds for golf.
Nicklaus, Nicklaus + Dye, Dye if he'll do another in LV (He has 3 fine ones at Paiute), Brauer, Moran, Smyers, Rees Jones (Quintero is teriffic save the repeated use of drop shot par 3's for all you Rees-naysayers) and anyone else I certainly don't intentionally slight by omission especially those never having done a true desert course. (And of course Doak and the resident infallibles C & C if they'll do it). The more the merrier and wow what a place it just might become.
Go for it, I just suggested that many architects are better than just one.