Many of the reasons why matchmaking would be hard to implement for raids are because much of the raid difficulty hinges on subtractive and unintuitive design. In other words, instead of actually increasing complexity and depth, they take things away from us to make it harder. For instance, the complete lack of nav point direction and the utterly bizarre disappearance of our ghost as our guide means Bungie removed two of the fundamental elements of this game that streamline it so that we can focus on other challenges. I believe the puzzle-solving element was supposed to be present in raids, but the vast majority of raid players have never had to solve any of the puzzles on their own, because they've either depended on other players or on YouTube (which is depending on other players). This means these raid challenges have only ever been solved by a very small number of players. I'd propose that Bungie release a version of each raid per usual, but then, after a month, they streamline it for a matchmaking experience by including nav point directions and Dinklage guidance. And I'd like to see this be retroactive to include VoG, CE, and PoE. tl;dr: the only reason end-game content would be troublesome in matchmaking is because Bungie designed them to be troublesome for matchmaking. But this could be remedied by continuing the design principles of the game and by taking an additive approach (versus the current subtractive approach) to increasing difficulty and depth. With nav points and Dinklage direction, raids would be more straightforward, and matchmaking groups would be able to concentrate on executing tasks instead of solving mysteries. Furthermore, to maintain the puzzle-solving experience, when a new raid comes out, Bungie could give it the classic treatment but then add the streamlined version for matchmaking a month later. Honestly, it isn't that hard of a concept. Bungie is just resisting it because they want to preserve that subtractive, unintuitive difficulty element, which is their prerogative, but the end-game content could absolutely be fun and rewarding in a matchmaking environment.