Oh, this is fascinating (and a perfect little fic for Halloween Eve). I always enjoy the trope of "thin spots" between the living and spirit worlds, and I *really* love the idea of a Halloween/All Souls' Night occurring simultaneously across the universe. :D Also, Gamora's perspective fits quite beautifully, with those other personal ghosts of hers. (...Though now you have me wondering if Drax's wife and daughter ever pay him a visit during the Night of Souls.)

In short, I much enjoyed this, and I'm glad I was able to provide a bit of inspiration!