I think it would be a very nice option to give us the ability to buy the memento with candy or Legendary shards. (After you unlock it of course) Since legendary shards are going away this can be a really nice way for us to get some value out of our shards. I would also think selling them for candy for like 5,000 would be a good thing because we will be getting so much of it doing other stuff like gilding ghost writer (requires 30,000) and just playing the game with a mask on, I can't see a better way to reward your time for getting candy or using those shards during this event than to get as many memento's as we want. I for one am not a fan of the legend lost sectors, even though we finally get something challenging that has MM, imo the cap of 1815 isn't necessary and I just something else to invest some time in to get the memento. ty