
Originally Posted by
Oizen
and [Living Shadow] allows DRK in niche scenarios to keep uptime where it normally couldn't.
It doesn't, though.
A target-locked effect of finite duration that deals a fixed amount of potency over that time with modifiers snapshotted upon initial cast (call it whatever the heck you like, if "DoT" somehow won't suffice) will not increase your melee uptime unless except insofar as it replaces the time otherwise spent on a melee tool (replacing that with something of greater range and therefore able to continue attacking when you otherwise could not).
A tool like old Requiescat that allows you to continue dealing (nearly) full damage (all but AAs) for 9 GCDs regardless of range is something that can potentially increase melee uptime, but Living Shadow acts independently of the time spent on melee skills while it is active, because it's oGCD.
"Well, Living Shadow is still attacking anyways" is not a reason to feel fine about not attacking, yourself, while Living Shadow is up. Your uptime and that of LS's DoT/summon-without-any-properties-of-a-summon/pet-that's-not-a-pet function independently of each other.
So no, Living Shadow is not a "ranged attack" in even a single way that has ever been useful in XIV in the context in which it exists (PvE). It has every characteristic of a single-target DoT --that simply happens in this case to be oGCD-- and no characteristics or uses beyond that.