I mean some things are hard. Most games without any difficulty increase are boring and unrewarding to play. I would say at least 50% of the game (pve at least. PvP depends on your opponents.) would not fall in the “difficult” category. Standard story missions, patrols, heroic strikes, and 10 wave onslaught, would likely fall into the “easy category”. Medium content would be things like seasonal activities, legend and maybe master nightfall strikes, legend and master lost sectors outside of the pale heart and neomuna, and some quests/adventures/ exotic missions. Hard content would be the master version of many seasonal activities or exotic missions. Legendary lost sectors on neomuna and the pale heart. Standard difficulty dungeons would probably go here as well. Endgame would be master difficulty dungeons, standard and master raids, and grandmaster nightfalls. Salvations edge gets its own “Ludicrous” difficulty for its sheer amount of asinine mechanics that prevent most players from ever even getting to complete it once, let alone understand the mechanics. And yes before the elitists chew my head off, if you have mastered the stupid mechanics then it can be easy. The number of players that can do that though is well under 1% though.