its pretty rare that we change animations for melee weapons. are you talking about any in particular like equip or the attacks, or just all of them?
the way we think about melee weapons is through what we call archetypes. different weapons follow different preset structures. so while its true this does have the same animation as say Oni or Magepunk claw, the same is true for other Premium skinlines like Reaver, RGX2, or Prelude to Chaos
the hope in these cases is that despite the animations being the same, the addition of things like VFX/SFX can do a good amount of lifting in terms of making the weapon feel unique. Something id say that does this well is Chronovoid, where its quite literally the same animations as Araxys, but it "feels" different.
additionally - we definitely do want to make new archetypes! and we are working on some new exciting ones, its just that we need to pick and choose where that effort goes. Last year we saw the Xenohunter "CQC" set, the Cryostasis "hammer" set, and some dual wielding with Sarmad. There will definitely be more new and exciting sets coming in 2023!!