I have completed all of the Taken War quests and then they gave me the "Complete a Nightfall strike" quest after completing all of those quests.
The Blighted Worlds quest says to work with Cayde and friends to wage a war on the taken. Also, I have a quest marker stuck on the Tower when looking at the solar system map and there's nothing for me to do at the tower. Wtf lol
-
I have the same problem its quite wierd