Practically speaking, what do you copy with Image? If they S&T Emrakul into play, you can Vial in copy EOT then swing for the win during your next turn. In a vacuum/goldfish, your only real copy target is the Muscle/etc. slivers because everything else doesn't stack.

Instead, for better coverage and digging, and to reset the topdeck for Library, consider Eladamri's Call in your flex slot and replacing one of the Images. You can tutor up the remaining Image if you really want to copy something on the other side. Otherwise, you have a tutor to find your missing sliver.

Just 2c. Might not work.

P.S. Also works with Revoker and some other sideboard options if you choose to run creatures.