Perhaps a system could be designed so that if you’ve already gotten yourself a legendary (say, Quip or Kudzu, which do look sweet, but on a male char? really?) and if/when new styles are released, you could “trade-in” your existing legendary for a different one, so long as it was of the same weapon type?
Have you see the dreamer? Much worse than Quip and Kudzu. :P
They could do a similar recipe to Eternity such as: Precursor to the new weapon, Old legendary weapon, 5 T6 mats, and a bloodstone shard. And have a separate recipe to make the legendary from scratch.
