And to remark my main point: as of now, there is no business, and the guys and gals can't leave the island.
This is obviously a transitorial situation, and at some point will be reversed, but for having most of the advetures they had up to now, that were not payed missions, there is not need of a true headqurter. And, just as the monitor room was in Grissom's bedroom, I think they could meet and plan in, let's say, Phil's villa living room (or Bree so cool lightower).
But, at the same time, I find it very cool that some of the members of the team, like Phil and Bree (and Sam) are actively looking to regain the splendor of the lost days, while the older Euro and Mason are less entusiast...
I thionk there are very interesting premises for this story.