*Assuming it has identical stats to its normal counterpart.
It's just cosmetic; why should people who already have a Seraphynx have to do the same work all over again just to look different?
There are 3 empty icon slots in the Battle Sprite page of your character overview. Why not use the middle slot as a 'sprite costume slot'?
If making a costume slot for Sprites would take too long [and I'm assuming it would because we still don't have weapon skins], why not make it so you craft using an already-unboxed Seraphynx, carrying over your level and perks?
+1 (to both ideas). Brilliant putting the new Seraphynx as a reskin that we could add to the the current Seraphynx; it'd open up more reskins to the other two sprites as well without clogging up our inventory, especially considering we can't sell our Sprites once we have them.