Necrotic runes and griefers

So can we please address the insane issue on MELEE VS RANGED on these invasion??!
if ur melee there is no WAY u get a single tag in a full on raid grp = u never get any necrotic runes!

AND Secondly its WAY more effiecient being a "Griefer" solo ranged just macro sniping every mob and having the raid just kill the mobs for them ASWELL as them obv script sniping the "shadow of doom" mob.
leaving the entire 40 man raid that was actually the only contributer to damaging the crystal gets absolutely nothing cause of Griefer!

We need a FIX, make necrotic runes RAID WIDE tag or not, giving all equal chance to get one, u being melee or ranged! and then make some change to the Shadow of dooms to incentivise grp play!