Nexus Clash

I think that the firearm tree of the ES needs more love. Thematically the ES should be (in my opinion) the best with firearms, but the HtH is so much better (no need for ammo, does more damage, is synergistic with the aura (which is... important for a tank)). So I propose:

Legendary Sniper 90cp (require: Master Marksman)
For every pet tick the ES remains hidden his combination increases by one step. The shot also became an autohit.

So if he hides and wait for 30 sec, his next shot will be at +6 dam and could crit

PS obviously you need to hide first
PPS keep in mind that the accuracy of an ES with Master Marksman and its other related skills is already at 100%

As much as I'd love the gun ES to get some attention, I'd not use this skill. Too much investment required (entire hide tree + this and the preceeding skills) for a very tiny increase in damage, and in an active situation I don't have time to wait multiple pet ticks.

If you add “and automatically takes a shot at a hostile faction member entering the square, becoming unhidden in the process” then I might finally try ES.

nevermind that
takes a shot at people walking outside

Shooting outside from the inside would be a little broken, but also fun.