thanks, i'll just do that for now on
minecraft is now using a json system and uuid (user something id), this will help things with name changes later on so people cant just chane names to avoid a ban and many other things.
this means that activities such as op'ing a player, whitelisting them or even banning them, isnt possible without the use of the console.
which is pretty stuffty if you ask me, but if i were to give that up for name changes, id be after a yes