Pl, you know I'm fond of quick build competitions, particularly ones with shorter time limits than you're suggesting. <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f61b.svg" type="image/svg+xml" standby=":p">:p</object> Nova, reaching Master rank on Creative requires a lot of dedication and skill, that is beyond many players. Any world limited to people of that high of rank would have a very small population. This not diving into how creative mode is a different experience than survival mode. The suggested "free" world is not at all in competition to the freely accessible Agharta server.