Before some of the recent alpha builds, the Spellslinger talent “Look Again” made Displacement create a Mirror Image duplicate at the position you teleport from. This benefit was recently removed. I am vehement to say that it should remain.
Displacement, in general, is a rarely used talent in PvE because of its costly positioning in the tree and niche use cases in comparison to the other row 8 and 9 talents (namely Dragon’s Breath, Ice Cold, Greater Invis, and Mass Barrier/Invis). Having it create a Mirror Image would have made it way more fun to use, offering a very interesting defensive benefit for both PvE and PvP (consider that the mirror image shoots Frostbolts and could proc Reabsorption/Reduplication). It would also perfectly fit the Spellslinger fantasy of innovating and splitting the mage’s spells for unique effects. Without the Mirror Image, Look Again is merely an unimpactful, unexciting buff to an already unpopular spell.