Archer Hero Confirmed? New Pirate and Resistance Chars?

Would that be hard to program in? I mean you would need some indicator of where it was gonna land.

First of all, it would never be "hard" to program in. As FoolsLove said, there are already skills that work like that.

Keep in mind, also, that skill ranges don't have to center on the player.
So, for example, Arrow Rain's current range is this.
It would be trivial to create a similar skill which had this range.

A "crosshair" of sorts could similarly be added, but it wouldn't really be necessary.
This theoretical class would simply be another one that takes some practice.