I allready can foresee trouble with Alliances system. Of course the "real" WvW players, or better said the good WvW players will end up sitting in a few guilds, which will create an Alliance. Pretty sure this can be expected. Ending up with maybe 1-2 Alliances of good WvW players against the rest (Roamers, newbies, trolls and so on).You may want to rethink the Alliances system, it will leave the matches to good WvW'ers vs bad/new WvW players.