I think Archer and THM will even out at later levels (past 50 when cap raises and after some job/class changes are added) I don't think they should be nerfed because they are powerful at the moment. As an Archer I feel really powerful but lack defense of any type I can easily get 1 shotted by NMs with a solid hit and hurt badly by proper rank mobs if I pull agro. Think about how powerful archers were in the old days, they was the range attack of the army that rained death upon enemy troops heads. All they need to do is tweak the damage based on range similar to FFXI and perhaps put a cooldown on some of the abilities.

As far as MRD goes I don't know what to tell you.