Basically the current week is most important, there is some contribution from previous weeks but basically if you do nothing one week you are going to drop a lot.
The bidding for stalls will be changing to be more automated but I’ll have more info on that in the future. Right now I believe the limit is 12 items that anyone can list, and then you can get another 12 or 24 via stalls (so max 36). That’s subject to change based on testing.
We don’t currently have plans for a mailing system like that, but we do have some other things we might do with the chest in the future (like auto-deliver gear you don’t pick up above rare quality or something like that).
Right now there is no Honor Shop or anything like that but we may add it as we expand the system. Right now it’s basically bragging rights via the title/icons and the leaderboard.