Why did Bungie get rid of red war?

Why did Bungie get rid of red war? Bungie previously vaulted the original Red War campaign and the Curse of Osiris, Warmind, and Forsaken expansions. The company claimed this was due to limitations of the game engine and a desire to be more innovative with future adventures.

Bungie previously vaulted the original Red War campaign and the Curse of Osiris, Warmind, and Forsaken expansions. The company claimed this was due to limitations of the game engine and a desire to be more innovative with future adventures.