Some items in the marketplace have a massive supply (thousands and thousands of minimum price listings that far exceed demand)  

Some items in the marketplace have a non-existant supply that does not meet demand (maximum price listings, hundreds or thousands of bids)  

Additionally, some items are provided by attendance rewards, Oasis boxes, and other "free" rewards (Hards, Sharps, Caphras, Memory Fragments, draughts, perfumes) in great quantities to help ensure a steady supply in the game.  

There are some cool things that workers can craft in cities - for example, Altinova Jewelry workshop crafting various materials & Yona Fragments into basic yellow accessories.  

I propose additional worker/workshop crafting options to help address the supply issues of various items in the game.  More workshops with more recipes!  

Examples:  

There should be a scribe workshop that can combine various herb and wood gathering products, en masse, into the ink & parchment of "Forbidden Book" and "Scroll Written in Ancient Language"  to help address Memory Fragment supply.  

There should be ways to convert various gems and minerals from mining & heating things, into important magic crystal ingredients like Forest Fury and Elkarr to help address rare crystal supply.   

There should be additional/more efficient ways via alchemy to craft elixirs, potions, draughts, perfumes, and even Ancient Spirit Dust.  

Give the players the power to identify supply issues and the means to address those supply issues, moreso than just "see no Elkarr for sale? Grind Kratuga" you know, just give more uses for gigantic supply items that currently have no demand, and give more pathways to produce the items in short supply that do have high demand. 

BDO provides many daily rewards of commodity materials to help keep the economy flowing. What I propose, is to provide additional methods for players to convert less useful materials into more useful commodities. This should improve the flow of goods in buying & selling, and restore value and usefulness to the many workshop buildings in towns, too. 

While there is supply/demand issues, this wouldn't be a solution.

Workers work without input, basically passive income. If it would worth it to craft with them, then everyone would do that, which would oblitarate the pirce (and profit) of the said item.

That's actually the reason why some items have so high supply at min pirce. Workers generate them for free so they have basically no value.

And while you can make yellow accs, the mats costs more than the item it produces, hence it's useless and noone do that.

I was hopeful that adding more methods to transform 1 item into another would force things to meet at an equillibrium of some kind.  

Like, it's very rarely profitable to make accessories from yona fragments, but there have been days where the market prices align and it is profitable (albeit very minorly). And if for some reason there was nobody grinding Crescent Shrine but you still needed a Crescent Ring, the option is there to make one.   

I think my main motive here really boils down to, I wish there were more ways to make Elkarr and Forest Fury somehow. Even if it were costly and inefficient, I'd like it to at least be possible.   

Secondarily, I just sort of dislike the idea that we get so many things for free in daily boxes, and think it would be "cooler" or somehow more immersive if more stuff were products of players, passively or otherwise, rather than just injected via daily gifts.   

But you are probably right to say that this could cause supply to be really really messed up if it is done incorrectly; it would be easy to make a mistake and then cause like, oops now Memory Fragments are worthless and the game is ruined - you know? It is delicate.  

Thsi would be a good idea, but not every item in the market that has high supply can be turned into items that have high demand on the marketplace.

There are always orders for T9 awaken materials. I'm not sure making workers able to craft these would be a good idea? Would depend a lot on execution. Maybe something like this would work for Milk, based on the numerous complaints I've heard about how milking cows is innefficient in terms of energy and result.

It would be tricky to see which items would benefit from the system because a lot of things in the market make no sense to me. (Maybe cause I'm not a veteran?) But for example:

Cheap Feed can be purchased in the Central Marketplace for 560 silver.. But it costs 3,000 silver at stable keepers. (If I'm not mistaken on the exact amount, but they're costier.) How does that make sense? I would understand if it's a way to have pet food you can pull out when you don't have any NPC nearby from which to buy, but nobody in their right mind will pay 4-6 times the cost to buy it in the Central Marketplace and possibly get 30% taxed. (And no matter where I look, can't seem to find any way to "cook" or "process" it.)

Or the typical: "the product of processing x item is almost the same price as the original" I understand processing can produce 2x the amount of final product. Maybe it makes sense when you look at Wheat priced at 1,200 silver and flour is 1,6230. But take a look at Pure Crystals:

To make a Pure Crystal (Copper, Tin, etc) You need 3 ingots of the respective metal and 2 Metal Solvent. How does it make sense that you can buy a Pure Copper Crystal for 150k silver but 2 metal solvents are 226k? The cost of producing one would be 257k? 

I understand it cannot be set up in a way that every base product you buy and process will yield you profit. But it's so disproportionate, it feels like you are punished for trying to produce things on your own instead of buying. I now sell my ingots, don't bother making Metal Solvents and buy the Pure Crystal. At this point I ask myself "What's the point of having a copper node? Might as well just grind some trash items and buy stuff instead."