RNG is very weak compared to other options. The job itself is broken due to its damage capabilities.
MNK goes nuts.
MNK pulls hate.
MNK keeps going nuts.
MNK doesnt care.
MNK kills mob.
MNK smiles
RNG gets in sweetspot
RNG goes nuts
RNG pulls hate
RNG is no longer in sweetspot
RNG makes the other DDs chase the mob
RNG is shouted at
RNG cries
RNG changes job to DD BRD or something better.
RNG needs to have -enmity traits that increase with level.
RNG needs to have low enmity shots from behind a mob permanently with no ability use.
RNG needs to have hate loss abilities which can be used frequently.
Until these issues are addressed rng is just a broken and more or less useless job unless you want blue proc during piercing time.