For me they dont even have to make new designs, to add in the game. We have sov gear since "January 2023" but still no sov weapons or even placeholder skins.
e.g
Dont know why they dont release till today. Because they are a part of the end game progression and fashionhammer.
The Blackguard need a great sword thing shouldn't be considered, they already gave them a shield, and a 1h sword, which isn't even lore accurate.
The blackguard is the Witching's personal army and are equipped with a halberd as their main weapon according to Games Workshop lore. Rather than making Blackguard as the playable tank for the Dark Elves, they should have gone with Cold-one knights instead.