Where was this amount of content in the other episodes?

so for those who havent seen the dev stream:

we're getting another 5 Heresy weapons, a boss rush mode, a new strike, Guardian games - with a new game mode, a new event which is Pantheon for dungeons (Spire, GotD, Prophecy) with most (all?) of the weapons from each being reprised with a shiny version of them and a "guided mode" and 5 emblems and a title for it and a mini new social space, a Brig v tank PvP mode - with seemingly a new map alongside it.

like where was all of this in both Echoes and Revenant? ESPECIALLY Revenant.

well done Bungie, seriously, im actually really excited to see all of this stuff