Chaos customization ideas

There's a lot of references for future chaos customization in all of the 40k miniatures, and instead of making each class based on one legion they could give more generic customization like how loyalist customization is, and they could make legion specific pieces unlockable for every class with currency. For example, tacticals can have normal legionary customization, and then as you unlock more armor sets it progressively turns into Aspiring Champion armor.

Here's another example
For the Assault, their Armor goes from Raptor armor to Warp Talon armor, and finally Chaos Lord with jump pack armor.

And for the Bulwark, Bulwark can go from chosen to Chaos lord armor minus the capes (sadly) so he doesn't look like the sniper too much. The hard part then would be finding proper shields for the bulwark, but its a lot simpler now at least.

Chaos Heavy get the heavy gunner legionary default (the mini with the heavy bolter in the first example), then chaos havoc, and chaos havoc aspiring champion.

Also, the chaos icons will be perfect for the heavy's iron halo. There can be multiple based on each of the 4 chaos gods, a specific warband/legion (like the eye of horus), and the 8 pointed star of chaos undivided.

Now the two last classes, Sniper and Vanguard. This 2 are the hardest to find armor for, but there are things we can narrow down that both can't have that will make them distinguishable from other classes.

For Sniper this is easy: Any and all cloaks that chaos space marine miniatures may have, they'll be given to the Sniper instead. Like the cloak the Chosen Champion or Chaos lord(s) have in the 3rd example, and 2: Snipers can only have bare helmets or hooded helmets, no helmets with horns.

Vanguard is more difficult, and I have only a very controversial restriction.
Vanguard will be the daemon possessed class (cosmetic only)

Vanguard will have minor but visible mutations, and at his default he'll start out as a Shrive talon with an exposed and clearly daemon possessed hand + having a unique helmet , and the possession continuously spreads through his body as you unlock more armor. And the reason why its his hand is because that's gonna be apart of his ability, his daemon hand IS his grapple hook, from the hand like seen in the second picture, when you use the grapple hook a mouth in the hand opens and sends out a tendril that works exactly like said grapple hook on the loyalist side.