I think you've gone overboard with Dilithium costs and have thereby made this game horribly inaccessible to people with regular jobs (i.e. those with money to spend).
With the new Dilithium sinks and stupid Doff costs, I don't think the 8k refinement cap is going to produce enough refined Dilithium to sell on the exchange.
If the Dilithium market crashes because people are holding onto more of it than ever before, then people will stop throwing money to solve their problems because they can't do so at a reasonable cost. If I need to pay 20 dollars a month just to cover my Dilithium expenditures then I'll probably start exploring other games.