For instance, in my quest to reach 100k as discussed in my Icarus build thread, I had contemplated respecing to one of the ultimate skills trees. I now know I want to do a 10/26/10 Science Ultimate configuration, but there's still many ways to achieve that for the sake of making sure I don't become a glass cannon.
I have been using Tribble a lot in the last few days, mainly for the K-13 scenery review thread i did, but that whole time I was queued for ISA and never found anyone to join in over there... hence my request to the Armada and any allies willing to help.
It took a week for me to just find someone willing to send me a fleet invite there too.
Granted, testing on Tribble does require a full re-installation of the game to a separate area on the hard drive, but being able to do unlimited free respecs and try out any reputation item can prove to be invaluable to the testers.