At this point, the only difference is that Mythic Regime is open to all platforms, and the others (Northstorm and Exiles) are only open to XB current and previous generations. In the soon to be released Divisions Update, we will be revealing a brand new project that is going to change the dynamics of our operations forever. The nature of these changes is Classified; but I can state that the Ranking System, Communications, Clan Hierarchy, Clan Events and Activities, and much more, are changing in ways that will ultimately foster an interactive community in a manner not yet seen in the Destiny Universe. It is going to be a lot of fun, especially with TTK right around the corner to coincide with our new launch. Right now is the best time to enlist with Mythic Divisions, affiliate with a Clan, and then bring to Oryx an armageddon never seen before in the entire history of the Galaxy...