I just completed the weekly Collect and Conquer bounty from the drifter in the Reckoning Tier 3. When I claimed the bounty if said Notorious Collector Mask but when I looked in my inventory it was only the Outlawed Collector Mask. I need Bungie to fix this. You can see that I did the Tier 3 because I also received the Notorious Collector Strides. I did notice that upon claiming the bounty I received a message about "maintenance beginning momentarily". I have been playing Destiny from the beginning. I am curious to see if Bungie is actually listening and helping it's loyal community members or if my putting this post here (which seems to be the only way of contacting anyone at Bungie) is simply an exercise in futility. I hate the Reckoning but have been slogging through trying to get this gear. Whether or not Bungie fixes this issue will determine whether or not I continue with the game. I cancelled my preorder of Shdowkeep and will wait and see if the company cares about its community or not before giving any more of my money to this company.
The tier you complete does not determine your reward from the weekly bounties. The tier of the helmet you receive is based on the number of times you have done that specific weekly bounty. To get any Notorious helmet, you have to do the weekly bounty for that helmet three times. The first time will get you the +1 helmet, the next week you can do it again to get the +2, and on the third week you can get the +3.