Wall of Replica's area of effect is really unique for a ground-targeted ability, creating a wall perpendicular to the caster with a length of 1000 and width of 50. And when choosing the parallel wall talent, 2 walls are created, one with 600 range behind the first wall.

Currently, the spell simply uses a pointer like other point-targeted abilities. It doesn't show it's AoE in any way, it only shows where the center will be.

Wall of Replica could make use of a custom AoE indicator, showing how far the wall would reach when placed. The AoE indicator would be a long rectangle, just like the wall, with a length of 1000 and width of 50. It would follow the cursor and stay perpendicular to the caster, like the wall. When choosing the parallel walls talent, a second indicator would appear 600 range behind the first one.