Consider a PVE scenario consisting of a single boss who doesn't move around much.
With 5 level 50+ necromancers, 5 traited Wells of Darkness (48s cooldown, 8s duration, 4 pulses of blindness each) can be rotated to provide 40 seconds of areal blindness (radius of 240). With a downtime of 8 seconds, it's pretty impressive.
Now, with 3 necromancers of any level, who have access to at least 2 utility slots, 8 untraited Wells of any sort (60s cooldown, 8s duration each) cross-profession-combo'ed with mine-spamming from an engineer, can be rotated to provide PERMANENT areal blindness (radius of 15).
If this is true, does it mean that any single boss fight in this kind of scenario can practically be trivilized with this group composition? Or is a nerf coming?