The discussion over in the "Romance in Brickonicle" topic took a very interesting turn, but unfortunately it seems a bit off subject going from a discussion of romance to relationships in general. So, here is a new topic to discuss what form we think the Toa's relationships should take.
This seems like an important subject, because I've heard that one of the best ways to define a character is through there relationships.
Roughly speaking, all personal relationships are divided into three groups.
According to Aristotle:
Note that these groups are very loose, and contain many very different kinds of relationship. The main purpose of these groups is the illustrate what relationships are "compatible." As a relationship changes, it can move from on group to another, however two relationships in different categories cannot simultaneously coexist.
Concerning the Toa, I think that there are two parts to this discussion, the relationship between the individual heroes, and an overall team zeitgeist. These things can be in contradiction with each other, but that will lead to conflict which must be resolved.
Personally, I feel that the group zeitgeist was the most important and distinctive part of each Toa team (often even more than the characters themselves), and it seems very important to preserve those themes, however others my not feel the same way.