e57 brings up an interesting point about the AFCIs and GFCIs needing a neutral bus near every breaker. It's looking fairly certain that the 2008 NEC is going to be implimenting a requirement for more, if not all, circuits in residential panels to be AFCI protected (as I understand it thus far).
This means that we're probably going to see most, if not all, of the panel manufacturers redesigning (or at least modifying) their products to accmodate the new requirement.
This might be a good time to start lobbying the manufacturers to make the changes we would all like to see, such as some of the great ideas on this thread.
