Chaos Orb = Annul + Exalt. Put suggestions on what Chaos Orb could do otherwise

Chaos Orb does the same thing as Annulment + Exalt.

I am guessing it's like this because if Chaos Orb existed like it does in PoE1 then ground loot would lose value. It just doesn't feel right for a currency to simply remove a step from the process. It should do it's own thing. I don't know exactly what that would be.

Suggestions on what Chaos Orb could do instead of replacing one modifier?

Please try to balance it around ground loot, no OP or infinite crafting

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My ideas;

Make it replace 2 modifiers instead, always a suffix and prefix, unless modified by rare omens

Make it replace all modifiers randomly and corrupt the item

Make it replace or upgrade all modifiers randomly and sanctify the item