The way you converted coins to zen in Perfect World is far superior to the GW2 model..
That game’s conversion mechanism was better because it had a bidding system between the buyers and sellers of “zen” (samething as gems in gw2)…
GW2’s system seems bad in the regards that buyers/sellers cannot reach an agreement, but rather is forced into some mathematical solution to demand/supply. And you get weirdo conspiracy theorists who have no clue about economics crying shenanigans.
Make it happen Anet.