Essences should be 100% load if a druid is in the group, but getting the essences should unlock a zonelet quest like shaman and clerics have. 10 room zonelet, hard mobs. If you die you repop essences again, but since they load 100% it is not as big a deal. Also make essence mobs load 100%
Seriously, I'll do rdescs, rexdescs and redescs if someone wants to make the mob/quest part. Chasing FC for a week is a pain in the ass, but going to Crytic over and over for no mob or a mob with no essence might be worse...
I think it would be a great addition for next wipe.