Game Addict Vs Oblivion?

I was looking at both the “Demo” sites and I ended up choosing Oblivion, as it was the only gaming theme I would need, I thought it had more features, I guess I was wrong. The Oblivion site does not include Clan Wars or a “Team Roster” or “Guild Roster” features. did I need to buy Game Addict? and is there a way to just Upgrade? or add the additional features?