I haven't played my Hunter (already have every exotic) since the 27th. Been exclusively playing with my Titan and Warlock in search of the new exotics and since the 27th haven't dropped one random exotic.
Just got on my Hunter and completed the Flashpoint, Wanted enemy, and strike playlists and have gotten 4 exotics to drop. I still have to talk to clan and Ikora.
So, as a player who wants to hone their ability to grind content properly, [b]I hope that we get character based exotic drop chances instead of account based. [/b]This way you can grind your three characters separately with the knowledge that they wont impact exotic drop chances for the others.
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Getting an exotic on one character does not affect the drop rates on another and never has.