Respond with a single big change Bungie could make, and I mean huge. Like player housing with a actual housing district none of this instanced stuff. Yes that means not every one would get "housing", however its that scarcity that makes it more desirable.
For me it would be dedicated servers w/[i]*kernel level anti-cheat[/i]. It would not just help address lag/latency but it would also make the game more secure.
[spoiler]*Kernel level or kernel based anti-cheat is a type of anti-cheat that operates at the deepest level of the system.[/spoiler]
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The only way bungie wins me back is reintroducing crafting, don't bloat the perk pools on random drops & make them unique, multiple drops for Raid & dungeon gear on each encounter 1 armor & 1 weapon (or just change it to where outside of Master you don't get armor anymore after the game registers each piece on the class in collections)/ Focusing at the end of the chest. Make exotics a quest/ knockout system for raids & dungeons so your not just farming CPs for possibly weeks/months because rng and return at least campaigns & vaulted strikes & pvp maps then. I'd CONSIDER bungie actually making a smart decision.