She did briefly address the dead Fëanorians while she was reasonableizing the Valar, so they will not have been quite unremittingly thus for the entire time.

And they were conversant, apparently, that's something. 

Well, she's not as sure on that because she had to get all their replies filtered through the Valar, she's one-way-only.

Well. They had thoughts on the question which sound sort of in-character, and which Mandos reported.

Yes, that happened.

(Bells, in a side channel, remark to each other about How Much Mandos Sucks. Seriously. Second Worst Vala. Uuuuugh. They do not trouble the main proceedings with this chatter.)

(Maitimos are kind of whimpering at the idea of seven thousand years of isolation, but not really in a 'he didn't deserve that way' because, wow, that's actually only a couple weeks per person murdered.)

Iobel isn't sure how to calibrate a sensory dampening spell for Elf senses.

Boots can do it though.

Then are they ready to have Mandos do it? (Do they want to deal with Fëanorian loyalists first or afterwards?)

How many people are they talking about here, Boots can't do dampening for huge numbers of people at a time.

Tens of thousands, but most of them probably not suicidal, and the standard Mandos procedure of 'awaken them in a Lórien' will do a lot.

Fortunately the Wish neighborhood has Lóriens coming out of its ears.

Vanda Nossëo wants to issue a blanket pardon, add a lecture series to the standard encouraged curriculum on orders one is obliged to disobey, and let them know they all have citizenship when they're ready. 

Sounds all right.

So, maybe they can leave it up to Mandos, while he's being obliging, in what order to reembody his remaining prisoners.

(Mandos would rather do a few at a time, in case the extradimensional visitors are wrong and they go back to murdering or something.)

Well, Gem's got more teleporters on hand than just Joy and herself if he wants to go and make it tedious. Sets aside some of a Lórien for the loyalists to be brought into in small batches.

He will make it tedious! The Lórien in Valinor will cooperate with the ones in Gem's jurisdiction, though, so recently-reembodied and mostly near-catatonic people don't even notice the transition.

And the Mîr Lórien fills up. Everybody gets a little note for whenever they're up to reading: they've been extradited to the jurisdiction of Vanda Nossëo care of Mîr, they can hang out in this Lórien-duplicate as long as they like, a Mîr staffperson will be findable in that convenient Lórien fashion whenever they'd like to move on, Vanda Nossëo has pardoned/commuted-to-time-served them and all their comrades-in-arms.

(Vanda Nossëo'd be happy to lend Gem some people to help handle this if she's overstretched or anything.)

It takes Mandos a month to bring everyone back, and no one's wandered out of Lórien yet.

Gem will take a loan of people to hang out and be ready when somebody pops out, sure.

He pops them over. "Thank you for your help with this. It should actually have occurred to me a while ago that you're going to have the fastest growing interplanetary empire by far, assuming you've got lots of neighbors, and that our local alts were probably unusually ill-equipped to hand you capable trustworthy people for all the administrative work that's going to create. You should feel free to treat us as a resource in general."

"Oh, thanks, I appreciate that."

"My pleasure! Congratulations on everything you two have accomplished so far. I'm sure you've been told we're considering moving planets from boring non-magic or low-magic dimensions into Space so they get summoning; we can drop 'em here instead, but it sounds like that'd just trade off against finding and folding in new ones?"

"Yeah, pretty much."

"All right. Thanks for everything." 

And he heads home and tries not to worry - it's not even obvious what the best outcome is, here...