Oh, <i>designing</i> something is easy, no worries. (As compared to &quot;getting adoption above 0.0001% before the heat death of the universe&quot;: how long did it take before we finally got somewhat workable Unicode adoption, even with the mess of about 5 different Unicode encodings, astral planes and whatnot - 15 years? 20? 25? And all the other bazillion &quot;extended ASCII&quot; encodings are nowhere near extinct, either.)<p>TL;DR: Betamax.