At present, the game is clogged with low-end materials. In not too terribly long, we'll have an auction house, and the "inconvenience cost" of trading materials will be vastly reduced. I'm concerned that this will lead to a problematic situation.
Right now, there are undoubtedly a few people who have a significant number of alt-accounts, by virtue of throwing 75 cents or so on each. And, equally, those accounts get their mist used for crafting loads of low-end gear. By itself, in the present circumstances, this isn't a terrifically big deal. It may well go against the intended spirit of the game, but really, whatever.
When the auction house becomes available, if the price of low-end materials drops below a certain price, the game will be not only enabling but also rewarding taking this behavior up to almost industrial levels.
For a one-star item like a haze bomb, for example, if the five materials involved drop below a total cost of 100 crowns, it's profitable to have an alt that grinds off ten of them a day, and simply sells them to vendors - not even taking into consideration selling them to other players, or the value of UVs found by doing so.
For a usual two-star item that's the start of an alchemy chain, there are nine materials involved, and if they drop below a total cost of 250, the same thing occurs.
Now, maybe this won't be a problem. Maybe low-end materials will never dip down to those levels. But I strongly suspect that it will be a potential issue. There are loads of possible solutions (another is to add more uses to low-end materials, raising demand; one suggestion for that is here). But another solution is both dead simple, and, as an added bonus, popular.
Raise the amounts that vendors give for materials.
Here is a set of "What vendors pay for materials" that, if put in, I think would reverse the basic problem (though UV hunters might still want to grind away with alts, and such, the guaranteed profit margin on the grind would die).
☆☆☆☆☆: 20 crowns
★☆☆☆☆: 30 crowns
★★☆☆☆: 45 crowns
★★★☆☆: 60 crowns
★★★★☆: 75 crowns
★★★★★: 90 crowns
And yes, that first step is a big one. The others, not so much. In my own case, cashing in my no-star materials under this setup would net me... a bit above 10,000 crowns. Enough, right now, to pick up 200 CE, and it probably would cause a fast rush on the energy market when first emplaced, etc, etc. Which is why I'd suggest putting it into place at the same time as the auction house, when things are going to go completely bonkers anyway, and it'll only see use if it *is* helping to solve that problem.