Currently it seems Jagex is the most active discussing DarkScape on Reddit. Here are some potential changes they are talking about: https://www.reddit.com/r/RSDarkscape/comments/3mv359/give_us_feedback_potential_big_changes_to/ (https://www.reddit.com/r/RSDarkscape/comments/3mv359/give_us_feedback_potential_big_changes_to/)
I highly recommend that anyone who cares about DS get on Reddit.