Guild Wars 2

Not sure why they have 900 range on glyph of storms, when
everything else like it is 1200 range (ie Meteor Storm and even
Signet of Earth).

Guess if doesnt matter to d/d eles, but they dont use it anyhow.

Glyph of storms outside earth attunement is horrible anyways besides for killing burrows.

meh, GoS on fire is ok. the best thing about it is simply its a multi hit skill so anything that trigger on crit/hit can proc off GoS multiple time while its running. it can also be casted on the move unlike many other location target aoe available. also if u consider WvW, more aoe option = more dead enemies
with the ability to move while casting, i assume thats part of while its in the 900 range. u can cast it and start moving away and i believe it will still go off. think u can also cast it behind u while running so long as u start casting while facing that direction.