Destiny is a sci-fi\Fantasy game it can do those things. The division series is based close to real world tech, it is very diffcult or maybe impossible for them to do that.
You're right about the setting for the Division 2 but nothing stopping them from introducing more sci-fi elements but that's not really needed. I think the bigger issue for them is there is no "jump" mechanic in The Division franchise. There's an option to mantle over objects but that's it. Division Agents are nowhere near as mobile/agile as Destiny Guardians and because of that Bungie can include different mechanics in their raids that Massive just can't do.