A common request in our recent MoP raiding survey
is to have more weight placed on the later bosses of the heroic dragon soul raid so that guilds completing dragon soul will be more fairly ranked. Consequently, we have increased the base points of Heroic Spine and Heroic Madness kills to 16,000 and 20,000 respectively. We have also extended the bonus point decay to 12 months (up from 6 months).
As a result, you may see some minor adjustments to your guild's rank if you have recently completed Heroic Spine or Heroic Madness and it will more closely reflect the date upon which these two kills were made.