Farming the lv 95 mobs is actually the best way to farm currency if you enter with 3-4 people party or more. They proc faster than the EP mobs, and drop more ( roughly twice faster, and drop 25% more). The only pb is ... they are level 95 so 15 level above the EPs, so you need a real DD and a real healer healer, so your average /dnc soloer isnt going there. Some o f them are nasty. We farmed 2 level 95 verthragna in 6 weeks, doing 500+ coins per run on those mobs.
They should let those mobs alone. Im also farming the archbosses now and while the arch bosses setup isn't good for coin farming I still end up with 100- 150 coin without trying to proc.