With the race changes being of a huge consequence affecting classes and other things including playstyles/content specific characters, I personally believe that slightly more than 1 race change token is needed for many players to reconsider their characters (or reserve judgement until more information about other changes is released as I have a hard time believing that the devs would do this overhaul on races but not change things about classes considering them hinting so with Elsweyr/Necromancer). It is interesting to note however that these changes have one precedent when races became an actual thing a long long time ago but back then race changes weren't available.