A Sala de Requisitos tem limitações. É assim declarado em a Wikia Harry Potter :
The Room of Requirement, also known as the Come and Go Room [1], is a secret room within Hogwarts Castle, that only appears when a person is in great need of it. The room is thought to have some degree of sentience, because it transforms itself into whatever the witch or wizard needs it to be at that moment in time, although there are some limitations. For example, it cannot create food, as that is one of the five Principal Exceptions to Gamp's Law of Elemental Transfiguration. It is believed that the room is Unplottable, as it does not appear on the Marauder's Map, nor do its occupants, although this could simply be because James Potter, Remus Lupin, Sirius Black, and Peter Pettigrew never found the room.
Também é notado que todos os Hocruxes, exceto o diadema de Ravenclaw, tinham feitiços e feitiços de proteção neles. Lembre-se também que na Ordem do Pheonix a sala foi descoberta, então não seria exatamente um lugar perfeito para se esconder.
Eu também quero acrescentar que este quarto em particular só se transforma no que a bruxa / bruxo precisa que seja. Por causa dos usos que teve durante os livros, acredito que só pode criar coisas comuns, por exemplo:
Dumbledore's Army used the room as their headquarters and practice area. Among the items provided by the room for the D.A. were Dark Detectors and shelves of helpful books such as A Compendium of Common Cures, The Dark Arts Outsmarted, Self-Defensive Spellwork, and Jinxes for the Jinxed. Around Christmas, which was the last meeting before the break, Harry was cornered by Cho Chang under some mistletoe and the two shared a kiss. They were eventually discovered by the Inquisitorial Squad; due to the Squad wanting evidence, the Room provided the meeting room and the list of members.
Eu não acho que a sala tenha energia suficiente para transportar qualquer coisa dentro e fora da sala. Isso também pode ser definido por Draco movendo o Gabinete de Fuga do corredor para a Sala Precisa.
In his sixth year, Draco Malfoy spent the majority of his days within this room, fixing the Vanishing Cabinet that he moved from the school's hallway, in order to smuggle Death Eaters in and help him assassinate Dumbledore. The repair took most of the year, as Draco spent much time inside the room, and had his friends Vincent Crabbe and Gregory Goyle remain outside in disguise to drop something onto the ground should anyone approach, to warn Draco not to come out.
Se a sala fosse poderosa o suficiente para trazer os hocruxes para lá, por que Draco precisaria mesmo consertar o Gabinete de Fuga? Ele poderia ter acabado de pegar o quarto para trazê-lo / criar um que estivesse ligado a outro diferente para que os Comensais da Morte entrassem.
Quanto aos pontos que você fez ...
Não, não é possível encontrar uma pessoa morta na sala. Isso se deve a uma das Leis de Gamp :
Exception #4: Bringing a human being back from the dead
We've been told over and over again in the Harry Potter books that dead is dead.
In Harry Potter and the Order of the Phoenix, in the Battle of the Ministry, after Sirius has fallen through the veil, Lupin tells Harry:
"There's nothing you can do, Harry--" "Get him, save him, he's only just gone through!" "It's too late, Harry--" "We can still reach him--" Harry struggled hard and viciously, but Lupin would not let go... "There's nothing you can do, Harry... Nothing... He's gone." (OotP pg. 806/711)
If you could bring a human back from the dead, there wouldn't be any need for infiri, which are animated bodies that are nonetheless still dead. Why not bring them all the way back? (Unless you wanted them to be extra scary.)
If you could transfigure a human being back from the dead, there'd be no need for the Philosopher's Stone, and the Resurrection Stone wouldn't have been one of the three Hallows. But most of all, if you could transfigure someone back from the dead, Voldemort wouldn't have needed horcruxes to achieve immortality.
So, that's four. But Hermione said there are five Principal Exceptions to Gamp's Law of Elemental Transfiguration.
Até onde sabemos, não há como a sala transportar alguém para o passado, só pode criar itens / salas. Como exatamente o quarto transportaria alguém para o passado?
Além disso, como dito anteriormente, a sala não tem qualidades de teletransporte como explicado anteriormente, então não poderia trazer Voldemort segurando a Varinha dos Anciões.