Interesting to be sure. However, I am a little concerned how communication will work in the tower. If you want just a one on one conversation with someone that is easily solved by just inviting them to your fireteam. For widespread communication such as trading (when it becomes available) or looking for replacement player for a raid, then there is a problem. In regular MMOs, there are channels with text for all to see if you so wish. Unfortunately, the primary mode of communication on consoles is either email or voice chat. I would not prefer my email box be bombarded by spam or hear a discombobulated mess of people shouting over one another trying to advertise their message. How then would bungie solve this problem?