A bit late to reply, but what about having something similar to dungeons like in forsaken? Those have a good feel and Especially if its something players were able to discover and such on different worlds. And it could expand the lore too.
Forsaken in a whole is a perfect example, with the taken corruption changing every week in the Dreaming City. And I do like the idea of those dungeons being implemented into patrols on Earth, Titan, Nessus, Io, Mercury, and Mars (The Tangled Shore is not included because it is still relatively new and has some content left). The only thing left to do on those patrols are the flashpoint and that's not even interesting anymore. Its just load in, do a few public events, and leave. Nothing new or interesting. A Forsaken type dungeon would really add to the mix and give a challenge to the more hardcore players especially when the flashpoint rolls around. Also we all cant get enough of that lore. An all around great idea man