A dehumidifier would take care of the possibility of condensation upon shutoff.
An AC is basically a dehumidifier + chiller. So let the dehimidifier run w/o chiller until temps = room temps = no condensation.
Someone build a mini-unit that fits into a 5 1/2 in drive and lowers temps 10C or more and you got a product.
Let's face it Thermaltake, Zalman and all these other companies have better cooling solutions on the board.
They are just in business. Business is to sell you a little at a time.
Why come out with great cooling now? Sell people more products over time and eventually arrive at great cooling. You make more $$ that way.
Sell you the greatest CPU cooler ever made now or sell you 10 revisions to make it down to the best cooler ever made over 10 years. Which way makes them more $$?
Companies are in business to make money so don't be in business to spend it.