This is mostly a theory, but I think Ikora will die next in the Savathun DLC similar to how Cayde-6 died in the Forsaken DLC. This idea came to mind when I realized how much stress the tower is facing. Currently we are dealing with the Cabal and soon have to deal with the Hive Queen and her army while the darkness clings close near us. When Ikora die's, Zavala will be in even more distress. For the last DLC/end of Destiny 2, Zavala may live or die. In short, "Gaurdian down..."
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ikora barely exist now