Board Thread:Questions and Answers Forum/@comment-89.98.103.122-20151017211838/@comment-26388714-20151017213858

As someone who has competed all the DLC missions before the release of the Taken King and after it, I don't believe the missions are easy for characters who have not reached level 40. Even at 299 light, I find myself dying in missions that should, in all honesty, be pretty easy. But, no, they don't scale with you, unfortunately. However, I've found that just the vanilla missions alone won't get you past 20. So, you should be okay in the long run when it comes to difficulty- but once you reach level 40, you'll become exponentionally more powerful due to better gear, like exotics.