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I'm not a fan of Replica items - mainly because of the 150/150 durability, they go down pretty fast. Also, there is no point giving items worse properties.
Blackthorns does not need much more added to it either, it has a decent list of rewards, you cannot go adding everything in-game to the Blackthorns List - same for the Clean-Up rewards List.
I get the point of finding a way to re-introduce these items to the game.
In my mind - we either wait and be patient, knowing there is a good chance they will pop up in future events - first aid belt has come up twice now, boots of escaping 2 times at least - and when they do come up, we will know how sought after they are, and really go for them.
Or - create a new way of getting them, new content.
What really could use an overhaul and better choice of rewards imo are the VvV rewards.