Sinking more zeny should be something we consider in the coming months.
Please take care of bots first. If EAC cannot be updated immediately, please ensure the "hot spots" are being cleared out each day.
Once you do this, most of us wouldn't mind a zeny sink in the form of an actual NPC selling "craftable" (stem, poison spore, blue herb, amethyst, etc., just not ori/elu) items rather than feeding the zeny to bot farmers (TBH this should have been implemented day 1).
You can even use the "limited stock" feature for the NPC as well as randomizing NPC spawns locations and times (similar to the old speed potion NPC).
I hate that the GMs are turning a blind eye about the RMT situation as well. Botters selling items for zeny, then selling zeny to players. These RMT purchasers are ruining the game's economy by driving everything up in price. There is also an issue of people straight up paying $ for MVP cards and high-value rare items. You should be looking looking at trade logs of very specific people about this. Forcing the card to be compounded don't do -_- except you make $20 off selling the decarding item from the kafra shop.