Single-player content, you say? Frankly, I'd love more single-player content. Preferably extremely challenging single-player content that provides gear rewards appropriate for the difficulty level. Better than redoing a fight for the 2390242nd time because one your team's DPS is somehow incapable of recognizing what stack markers do. And the best part? Single-player content is decidedly lower effort to balance and maintain, so it would fit right in with the current lack of effort on SE's part.