do you think being able to remain on their planet and act as though they were alive even as a ghost (like aradia did) is a burgundyblood thing or just an aradia thing?

The common theory I’ve seen around is that her Dreamself on Derse was subconsciously communing with her Ghost and letting her keep acting on the Land. Sadly, with the presence of the Bubbles, we kind of don’t have enough information about the Afterlife and Ghosts to make a proper judgement call.