Just go fiber and be done with it. Then you just change out the optics on the end for whatever faster specs come out. Glass doesn't change too much.
Even the fiber specs have changed over the years. I used to run 62.5/125, but if you wanted to go to 10Gb or faster, then you would want OM3 50/125 fiber end to end instead.
Still after all these years nobody does fiber to the desktop because copper is still the cheaper, backwards compatible, and just as good for most applications.
