So after seeing recent threads about how halo 5’s lore may be to complex for the average player I started thinking, and this is my solution…
So what if in the build up to the launch or even immediately afterwards, every week for a certain time period a series of campaign-esque mission, one per week -maybe more, that fill in the lore around the games- like interactive terminals. These would be available off the xbox store as individual items (free dlc if after launch, stand alone titles if before launch) and could also be used for server stress testing and the testing of other systems i.e. matchmaking systems.