Just a couple of aug ideas that I think would be popular.
Red Augment - Ghost Touch - ML 4 (in time for Catacombs and Delera's).
Red Augment - Crystalline Transmutation - Turns your weapon to Crystal, rendering it immune to Ooze and Rust Monster damage.
Blue Augment - Blueshine Imbuement - Turns the item it's slotted in to Blueshine, rendering it immune to Ooze and Rust Monster damage.
Named Aug - Red - Blood of the Vampire Thrall - Lesser Vampirism
Named Aug - Red - Blood of the Vampire - Vampirism
Named Aug - Green - Blood of the Vampire Lord - Grants Vampirism to all your melee attacks.
Named Aug - Yellow - Curmudgeon's Spirit - Immunity to Dancing