Quick question: will BlightedMap always be true if UberBlightedMap is true?
Yes!
Added Item Filter support for Blight Ravaged Maps
I don't see Blight Ravaged Maps on the item filter syntax page. Am I missing it?
The other new updates (Scourged True, BaseArmour, etc.) do correctly appear on the item filter syntax page.
Yep it was missed from that page, we'll get it updated. EDIT: That page is updated now.
UberBlightedMap True/False
Upcoming format information is available in our developer docs here.
jsonwhen
A specific field for the percentage of the roll would also be nice (though I wouldn't mind too much if it was just available as a pseudo mod).
Most likely this.