UNIT - Creature Balance + Visual Changes

The obvious solution to this upgrade inequality is to increase the radius of the accurate shot.

How much should we increase it to? - it still ignores ALL defense, so it's not weak. Maybe increasing it from three cells to five would be good, or even just to four?

Here's another suggestion: let all three have an accurate shot. The upgrade could add an arc shot, and the alt-upgrade could add maximum distance (that is, a choice between area of effect and maximum distance, and you can balance everything with stats).