Oooooooooooh, that sounds promising...
Everything's looking wonderfully grotesque, I have to say. I love the obese Daemonette (
OH SWEET EMPEROR IT'S TOO THICC) and the Contemptor especially.
Some more silly ideas I had for when the army gets expanded a bit more:
For Rhinos, or any vehicles for that matter, perhaps give them extra armour...in the form of still-living foes chained to the exterior, as literal human (or Aeldari) shields. Bonus points for representing a Dirge Caster with a prisoner chained to one of those BDSM vault-horse things linked up to a loud speaker.
I'm not sure what you'd represent them as (perhaps as a Warpsmith, or a Fabius Bile stand-in?) but a sort of "nutty nurse" type character would be interesting. She/he/it could be a twisted parody of the "sexy nurse" stereotype- so scantily clad and all that, but with hideous mutilations and augmentations (notably a profusion of extra limbs, perhaps pilfered from the Talos kit, and a face that's pure OH GOD NO). For added fun, give her/him/it a big ol' grimdark "giant anime syringe", perhaps actually grafted onto its arm.
Some kind of centipede-inspired daemon engine would be cool. Perhaps take the Necron Tomb Stalker and heavily convert it?