Losing some raids is a bummer but only saw an uptick in usage because of uncapped rewards.And raids, and the menagerie, and weapon catalysts quests, and strikes, and crucible maps, and gambit maps, and dungeons.
The hilarious part is Bungie will bring content back later and it will be considered "new" content to justify the price of seasonal content.
Catalysts being removed is dumb and should be reintroduced as quickly as possible.
Strikes are kind of a meh, nothing to really grind for in strikes except XP.
The Menagerie is cool.
The gambits maps for the associated destinations are actually staying. Ironically we are losing maps for Dreaming City and Tangled Shore.
Crucible maps are also being removed from other destinations and good thing too because most have severe balance issues that date back to the game being 4v4 at one point. Most OG maps were never balanced for four additional players.
The Dungeons are staying, Prophecy being removed temporarily for some technical reason.
But I understand the concern.