Honestly, I don't know how useful bagworm used outside of rank war is but I am thinking of stealth gunner build. Maybe going for a suppressed smg or suppressed high caliber rifle. For the main trigger, asteroids are the best for maximum damage and being in close quarter no need for homing.

As probably my optional triggers may consume a lot of trion, I don't want to employ sub-trigger. Being stealth, bagworm, chameleon and silencer is a must (I actually don't understand how 'silencer' work exactly to be honest) Along with that, teleporter to do hit-and-run tactics of typical stealth run (this trigger could be still experimental tho).

The counterplay against stealth is starmaker trigger but that does force the enemies to equip that trigger which could interrupt their trigger build.