This popped for me too when I did my search for enchantments with ETBs, but couldn't decide whether I was crazy or not. If someone else thinks it might be a good idea, I might give it a spin.
On the exiling-enchantment front, I'll also highlight
Exclusion Ritual as something that caught my eye with Invocations.
EDIT: I just twigged on Detention Sphere with Invocations. Very nice.