Aleksander considers the both ideas.
"You must both understand, ghosts are not anchored to things - they are anchored to places. Brush, what you propose may be possible temporarily, but I am uncomfortable with putting you in so much danger. And Tamara, although the Heart is an important part of the ritual, we haunt The Aurora. The supernatural does not always operate logically, but its rules are no less firm."
Tamara thinks this over. If ghosts haunt places, then the manifest zone between Mabar and the Aurora is as much the place they haunt as the ship itself. Transferring the Dark Heart to The Way could move the manifest zone onto the ship. There is considerable danger however; the Endless Night ever seeks to devour, and transferring the Dark Heart between ships could destabilize it. In the worst case, it could consume both ships and forever trap them in Mabar.
Brush also considers Aleksander's words. With a large enough Siberys shard, he is confident he could hold the Karrnathi ghosts within his life force. For how long, and at what cost is still not certain. Worst case, all four of you could be lost in an eternity of drifting between life and death.
OOC:
Is it possible to merge these two plans together to enhance the chance of success?