If people are stockpiling huge amounts of resources without use, then that means that there’s too much supply and not enough demand. The two options to fix this are increasing demand or reducing supply, both have the same effect. The question is, which is more likely to happen and is easier for staff to do?
Anything you can grow will always be in ample supply, it’s too easy and requires very little effort. I don’t know the process behind making drugs/alcohol in LotC, but I imagine like real life for the most part they use easily obtainable ingredients. Materials provided at CT rather than the open world, worthless, but it keeps players from having to destroy the world in order to get them. Mineable materials like emeralds, lapis lazuli, and for the most part, gold, are completely worthless. The only materials/goods that have any real value in LotC are land, property (like homes), certain mineable resources like iron and diamond, specialty crafted RP goods, and a handful of goods which are needed regularly like tools, weapons, and armor.
So this brings me to the point I’m trying to make; how do you increase demand for these items? Bringing in more players will increase demand, but also supply so that won’t do it. Relying solely on cool expensive RP goods clearly isn’t doing it. So why do you think increasing demand would work?
Think of the LotC staff as the Federal Reserve, and instead of printing the US Dollar they print resources and mina. Does the Federal Reserve work to increase demand? No! They control the money supply. It’s not realistic to think LotC staff could reliably increase demand in any meaningful way just as it is that the Federal Reserve would be able to.
Resources and goods are so cheap in their current state that if there was going to be a “overconsumption” like you say it already would have happened. Many people, like myself, enjoy playing the economy. It’s very hard to play the economy if there is virtually non-existent due to there being such an excess of resources and goods. In addition, it’s difficult to RP jobs like mining or farming, when those jobs don’t exist because there’s pretty much no point for them to since people can just spend a days worth of mina from voting to obtain everything they need.
Maybe I’m wrong and the vast majority of the playerbase enjoys being able to obtain everything with one click of the mouse. However I’m willing to bet that’s not the case.