Fractals
I don’t think it likely, because it wouldn’t fit with the theme of Fractals at all. The Fractals of the Mists are supposed to mirror things that have happened- in a sense, they are photographs, informative but ultimately flat glimpses at something that once was. The Realms of the Gods, on the other hand, are very real, and for humans at least hold deep personal significance. After all, they believe that they’ll be spending eternity in these places. There’s also the possibility of the Gods being present, arguably the most powerful beings in the universe. The idea of gods and afterlives being reduced to a fifteen minute snapshot more focused on some gimmick of gameplay than what’s going on is… distasteful. To do the Realms justice, they’d kind of need to be the opposite of what Fractals are.