It was proposed to fill the gap between Sanguinesti staff and Tumeken's Shadow.
Instead it's basically the same as having a shadow, and in some places, actually better than the shadow.
With talks of a potential change to the shadow in the future, this is likely to to make the Eye the go-to for all maging content. This is shown in the current price of the shadow
The harder-to-obtain items that come from raids shouldn't really be so easily out-done by an item that's 1/10th the price.
I propose bringing the dps of the Eye down to match (or be slightly below) the Sanguinesti staff.
This will then create the dynamic where you can choose which to use.
The Eye is cheaper to use, and the clear winner for crowd-clearing (e.g. Nylo waves)
The Sang is way more expensive to use, but you get the ability to heal.
This will allow the Shadow to continue to be best-in-slot (which it should be, considering where you get it), keeps the Sang relevant (which it should be, considering where you get it), and avoids the eye of ayak creating a problem akin to the old blowpipe