Great post friend! Seems crazy that Corsair hasn't either made or responded with a simple extension cable. Don't mean in the least to be negative just seems like something that should already exist?!?!
I also have this issue and had to forgo using LED Corsair fans since the pin extension was not available. I wanted to place the fans on the back panel of the case which is removable so I wanted 8-12in at least so I could comfortably remove the panel without fear of ripping out the Corsair link.
Simply brilliant post hope it helps others till a reasonable work around is available.