[Emperor's Child]

I've dabbled with getting a 40k mod going myself, but found I didn't have the time. However, If there is interest in a 40k mod, in addition to this purple chaos set set I can spin off variants in Red (World Eaters), Green (Death Guard), Blue (Thousand Sons, alpha legion, Night Lords), and Grey (Iron Warriors / Black Legion).

Also, the Drushaka are close enough to a Nid set that they can be used as a proxy in a pinch, though Nids would be pretty easy to to.