pHaestus, I understand what kind of decision was made there with the MCW6000 series, the only thing is that it seems that others are able to jump to new designs and obtaining good results (Little River/DangerDen).
Of course, once a certain goal is met, improvements will be added.It's only natural.
But, if you take a look at this roundup of 21 watercooling kits made by a french site (sorry for the linK:
www.presence-pc.com/article-93.html) you'll see that a Innovatek Premium XXS(12v) falls close of the Swiftech 22500(mcw5000), considering that it only has 1x120mm/55cfm Papst fan.
Now taking into account the cost and performance of the two (Innovatek - 0,21c/w and Swiftech - 0,2c/w), this time I just would like to see Swiftech a bit ahead of them all.
At the end of the article you'll see also a interview with Mr. Gabriel Rouchon where he states that Swiftech will remain with the top of the line product segment.(It's in french, but Google has a translation option).