Well... should it? A higher rating could open up more story and gameplay opportunities.
English
#destiny2
-
If they treat the story with respect without trying to foolishly retcon everything? Sure. The Red Legion's attack on the City is a good example of a watered down story that could of been better if the writers fleshed everything out and presented it with a Mature rating. This was a horrific invasion and yet it's treated like a Saturday morning cartoon.