I have a suggestion for end rewards, as I currently understand it, games are supposed to reward you for competing something, it maybe a new weapon of some sort in some games, or you unlock a new level or you even get some item or health gain.
Currently in DDO you a rewarded from completing a quest by xp and an end reward as well as some chests.
But what happens when a character is level capped? The xp no longer becomes a reward and the chests don't always give you what you are looking for, a lot of times they don't give you anything you are looking for, and the end rewards are about as good as the chests.
So what I'm thinking to help a little with this is have a cash reward at the end of the quest, either you take an item, or if there is nothing that you can use, sell, or trade, have a cash pile listed for the full amount of the item the is worth the most. Or just a static amount that is worth more than 35% of the full item worth of the most expensive item.