At present lost sectors are just a tucked away room or two if you are lucky in the corner here and there on a patrol map , but they have the potential to be dungeons or very least mini dungeons in the vein of legend of Zelda and other similar titles. Imagine an entire network of rooms and areas that you have to explore and clear to get to the end , that some would be simple go through by yourself on your own, others would have a enough light puzzling to do to require a team of 2-3 people to complete. At the end of every one a ultra (and for those who don't know what that means, a significantly strong yellow bar enemy), to guard the chest of currently unknown golden age goodies , the difficulty of said ultra(by their own strength or amount of disposable minions) would match the difficulty of said lost sector . As for rewards it would again scale for the difficulty of the lost sector, with the highest caliber of difficulty to reward legendaries and other such prizes at or near the current cap of whatever expansion is currently available the time of their creation. Bungie could even make a nightfallesque challenge card for it for added challenge and rewards, and it would only activate in the lost sectors . And to top it all off, make cayde 6 the vendor for lost sectors, I mean technically it's his Hunter scouts that mark the lost sectors in the first place, and as I noticed recently, is the only Vanguard Mentor that doesn't have a armor set, so every time the player completes a lost sector give them tokens on top of their rewards for completing it similar to strike tokens after every completion of activity, and have them be returnable for a special set of armor ( I'm thinking Indiana Jones meets space armor) that might give minor buffs when in lost sectors, as well legendaries from the generic legendary pool of gear . Open to all critiques and improvements that can be made to this idea.