This would greatly cut down crafting grind especially for raids and dungeons which typically only give 1-2 deepsights per week.
Bungie really should consider this if they continue to retroactively make older weapons craftable. (Look at you DOE)
Not too mention the RNG and race to unlock seasonal blueprints. I mean just last week I finally finished all season of the haunted blue prints as RNG was heavily against me.
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If they would only increase the amount of resources you get from leveling up red border weapons that would be something. I like to make duplicates of my favorites to avoid spamming DIM.