I think that we should only have Obelisk, Ra, and Slifer dorms.
However, group wars do sound pretty cool. I think that maybe we should create some teams with a mix of Obelisk, Ra, and Slifer in each group so then we can have 'Group Wars'.
(Because if we had Obelisk vs Ra vs Slifer, that wouldn't be too fair, and having 3 groups in a war usually doesn't work out very well.)
So maybe, when we have more people, we can team up into 2 or 4 groups and have some fun.