Why not do every team. A couple teams out of context is not a way to go. Its like saying okay were going to rank teams 1, 4, and 9 but not worry about what happens with the rest of the 10.
This would cause skewed results in the end and would not prove anything in the end as it would not be complete. You talk about a 1 game season does not exist. Well by trying to only have a couple teams it is a simliar argument.
All or nothing, show us what your system is about.