Do not change the current content you have. You will ruin your game by making the game casual. The more the difficult the game is, the longer you keep the game going. Hardcore players attract more casual players, most of your audience is hardcore players. Casual players cannot be tended to via endgame difficulty lowering. Let's take a look at WoW's playerbase as of doing this lowering difficulty mentality. After WoTLK the player base declined SEVERLY and has continued to decline until it's eventual downfall. You cannot cater to players like this. It will simply ruin the game for the hardcore players (THE ONES WHO WILL BE YOUR REOCCURING SUBSCRIPTIONS) and introduce many casual (Play for a couple months the on to the next fad) players which will greatly decrease your playerbase. The game is fun because it's hard. Endgame cannot change. DO NOT CHANGE IT OR LOSE PLAYERS. The route to casual has been the games downfall and you need to check up on your history so you can see my point.