It would have been more fun for us to relocate to Paris, of course, but it's easy to dismiss LrMobile without appreciating what it is and how it can be used.
That's awesome that Lr is capable of spanning the globe to include parties located elsewhere ... Too badd it can't reach a few feet through the ether when an internet connection is not available.
I had a job earlier this spring where we were on location where there was no internet access whatsoever. No cell signal. The closest telephone landline was over 50 miles away. Yet we had an ad hoc wifi network in use. The art director was very nearby but was not actually on several of the outdoor sets we were using.
In my case, Lightroom was just a bunch of useless ones and zeros occupying valuable storage space on my devices. So we went Old School with with an Eye-fi card and the ShutterSnitch app. The AD received constant feedback on how the shoot was progressing and could even shout out direction when we were in ear shot.
Now you may say my situation was a niche concern for Adobe ... it is a major concern for me as I have 6-8 such shoots per year under these circumstances ... but I would wager your situation of parties sprawled across the globe requiring live feedback is not that great in numbers either.
Anyway you look at it. The absence of a wifi option to dispense Smart Previews to Lightroom Mobile is a huge missing piece of the puzzle. And in intentional oversight IMHO.