In my games, which are non-ToB for a variety of reasons I won't get into here, I can say with definition that the retooled classes are a strong Tier 3 style contender. They are powerful and relatively versatile, without being overpowering or overwhelming. The Samurai in particular is solid without being broken (had a player run one from 5 to 11 in a recent campaign; he was always useful in combat, was fairly useful outside of it, and was a blast to play with). The other classes appear to be on the same scale as the Samurai, so they're pretty much fine, IMO.