[Paul]

Journey,
Another approach which would address your situation, instead of multiple contexts, is to be able to add metadata to OF's tasks.

For example, if you could add a column for Person, and be able to view all instances of a person across contexts, I think it would address your need.

Or if there was tagging, you could tag all tasks that involve a person, whether you were waiting on them or you needed to respond to them, or have an agenda with a committee that they were on, and then view all tasks which have their tag.

As long as it's easy to enter and easy to sort by for viewing, I would take any kind of metadata solution.