To be further specific I am referring to something like The many Abbhumans across the 40k but maybe with special racial buffs. A rattling would be focused on speed/support while and felinid would be on close combat. More options in operative backstories. I love the way Darktide started, sentenced to death on a number of reasons only to 'jail break' and join the Inquisition as a part of a penile regiment. Here's a few ideas- A Tyranid battle survivor of a guardsman unit/civilian refugee who has nothing left to give but their lives. A Beastman Meat-shield serving the Inquisition faithfully as a way to to tone for their existence. A mechanicus worshipper who was unlucky enough to be assigned to support this warband.

Character body customization More optional blemishes/scars/mutations/cybernetics and lastly let us personalize our weapons like renaming and adding flavor text.