I think that Bounty leads and vanguard missives should be classified as mission items rather than bounties. That way we can pick them up and turn them in for bounties when it isn't going to clog up a slot that we need to stack bounties. I also think that each step of an exotic bounty should give you a mission item reward that you then turn in for the next step because those block a bounty slot for a while if you don't dedicate all your time to knocking them out immediately. This should make the bounty hunting process more user friendly and less grindy without making them feel easier.