Being able to see quests of your heroes by clicking on their feed!
Whenever I look at the feed of my heroes, it only says 'Person X did quest Y!' and so on. I want to encourage them and make personal comments, but I have no idea what their quest is about. I can click the 'quest Y', but it's not an actual link.
I think making it so that whenever I click on the quest (or achievement/badguy/etc) my heroes did/won/conquered, I get a description of what the quest is and what they did. That way, I can make more useful/personal comments to help them!