ok for what i read on some places unreal used to support Dual Quaternion, but later it was dropped and longer support it, then i would love to have it back at last a option when importing a 3d model with joints to the user choose to "enable or not Dual Quaternion support in the import options screen like when you have things like morph target and others things, because the “current used way” while overal is fine when comes to "animate characters and “realism” Dual Quaternion can be much better and make things bender in a much more precise way and work much better when combined with corrective morphs, then since unreal is focusing more in movies and animations, having some "improviments on that front would be awesome, currently to have that option enabled i’m forced to use a "user made mod:
to enable usage of Dual Quaternion inside unreal and for what i read many others programs, like maya, blender does use it and only unreal not support it.
here a good discussion over it:
and here a very old video over it:
i would love to have it back (if unreal had it in the past), or be added in the future.