i agree with the sentiments expressed above.

To me, the big killers for RNG are the inability to keep the mob from moving (i.e. enmity control) and the inability to proc red or yellow in Abyssea.
The fact that we pay for damage that is no better or worse than any other dedicated melee is just icing on the cake. Then add in the fact that we can do little other than use shadows to fend off damage, and doing so significantly nerfs our damage due to the lack of auto-attack, well, you can see the picture.
There is very little in the game that needs kiting and damage from a distance anymore. In Abyssea, brews, endless MP WHM's and super high HP MNK's have negated the need for kiting most of the time. Outside Abyssea, nothing is overpowering to level 90's save AV and PW.
ANd being a dedicated Xbow RNG, SE really killed us with no magian XBow weapons at all.