I hope you don't take this the wrong way, but there was a poll in the forums, and I think the majority stated that they would use it. However, the people who said they wouldn't were not a small group. It was like a third, or at least a quarter. But is just not true that it will benefit or it appeals to only a very, very limited group.Multicrew is another wrong feature developed by FD.
In short it is a feature limitated only to a very very very limited Group of people, leaving out all the Others player..
I do agree that NPC crew would be cool though, and it is a shame that you don't get to see the NPC crew member that we already have in the ship (since all the assets for it are already there). The problem with multi crew is not that it appeals to a limited audience, but that the mechanics are very limited on their own. And I know this might be just the first step, but Sandy already said they had no plans for multicrew, no vision of it for the future, as if there was no intention to pursuit their original idea. He did express aperture if the feature is welcomed, but at this pace, I have no hope. It might take years to see something new added to it.