I am good with everything up to the Anchoring Aura.
Beyond that it does not scale well, in my opinion. That being said here is something I might suggest.
Sidestep Secret: My first suggestion would be to change the name and drop the curse aspect of it. The curse is not needed. I would go with "At 9th level the Ardent Aegis's understanding of the thin barrier between the realm grows. Your innate understanding of the universe has granted you preternatural reflexes and the uncanny ability to step out of danger at the very last second. You gain a +1 insight bonus to your AC and reflex saves against outsiders. At 12th level and every 3 levels beyond that this bonus increases by +1 to a maximum of +4 at 18th level."
For Aegis Shift this is what I suggest.
Aegis Shift: Make it 2 uses of your smite ability, and make it a move action. This would allow you to move 1 Outsider. Then perhaps increase this quantity you can affect by 1 for every 3 levels after 11 to a max of 4 at 20th level.