I am not sure what you think is inadequate with a well built, all aluminum case with 4 fans? No offense but this topic doesn't make much sense to me, cases are cases are cases whether they are old or and new all that matters are the materials and number and location of the fans. It isn't like there is really any new "tech" in these areas except maybe for larger fans which move more air relative to noise, or the other being dedicated cpu-vents; but it isn't like the best performing and most expensive cases even really have those too often, or any other feature that is different from any old square case that is based on cooling, but rather noise, looks and accessibility.
*disclaimer, i use a pc-60 and it keeps my computer frosty. So much so that in my drafty room the aluminum cools the system down so much overnight that I have to use a hairdryer to get my asus ip35-e posting in the morning.