Last few days I’ve been working on adding ranger traps (damage currently goes to “Unknown”), but I’ve decided to leave it out like that because the log is way too inaccurate about it, it’s a bit like sm pets. Imagine f.e you arrive to defense siege and a few rangers have set some aoe traps, you set then one yourself; since you arrived late, your ARM has no data about previously set traps by other rangers (in which case ARM would nullify the association), then all traps trigger at once when some mobs approach, you would get all damage from every other ranger trap associated to you.
So, no traps for now :(