@Meddler, the coin response on the PBE is poorly thought out
The quest/passive is the one factor that is making coin in such a strong state right now. If you are planning on doing any nerf at all to it's passive then there has to be compensation buffs or even rework to the stats that the item offers.
Right now relic and spellthief have a closer 50/50 split in the power offered from the stats/passive+quest while coin has more of a 20/80 split of it's stats/passive+quest. Rather than removing power from coin, what really needs to be done is that it's power needs to be shifted.