I persuaded management to buy a pair of older Retina MBPs in our latest batch of non-TB machines. Sure enough, a colleague expressed interest, switched and was much, much happier with the 3-year-old hardware than the gimmicky brand-new machine.

And FFS, the number of USB-C adapters I need to keep on hand is a joke, at least you can plug things directly into a Retina without a dongle!!