I've been thinking of this myself. It seems like the Destiny universe would be perfect for an RTS. For the Hive, they should get the option of building shrines that dictate what units they get access to: -A Shrine of Crota gives access to powerful frontline units and upgrades focused on sheer strength, like Berserker Knights or Summoned Ogres. -A Shrine of Nokris gives access to its own set of upgrades and units, like Vanquishers and Adherents, as well as the ability to resurrect dead units. -A Shrine of Oryx gives the ability to "Take" enemy infantry and commanders, adding a new "Blight" resource that caps at a certain point and is spent in different quantities depending on what was taken, with basic infantry being almost free and commanders requiring huge amounts. -Only 1 of these shrines can be built at a time, and as long as it exists the others cannot be built.