You know, this is pretty interesting. I've always wondered what it'll be like if they had a Ballistician class. I pictured the Ballista could operate as a vehicle the player rides on and can travel places like to how it works in the Fire Emblem series.
As a MapleStory class, their functioning can be similar to how the Mechanic class works. When the player needs to engage in combat, the Ballista must be active in order to use their skills.
Nexon also has something like this in the past, with that being one of the moon bunny events where you were forced to operate a ballista and shoot balloons. Here's an image I found while googling the past events:
