BW, our alliance has people in it that dont plan on being active. I think that Twigs and Lukey took activity into account when setting teams. Im hoping that this is the case for all alliances- that there is one insanely active person, a few moderates and a sort of "I may be around a bit when I feel like it" player or two. Try not to get discouraged, Im sure that all teams are the same in the setup of skill level and activity level of the players (and time zones too!). This had to be a mess to set up. See what you can do to motivate your people and then get as much fun as you can out if it
If people are allowed to switch to more active alliances...then they wouldnt be balanced anymore. Youd have a few alliances with people who just ate the "I just want to have some fun" alliances for breakfast, lunch and dinner!