Treasure!

[GM Marvel]

Good points.  In terms of healing Kubo, as I mentioned, Selina has healing out the wazoo.  And she's always keen on healing others before herself.  So she'll be more than happy to heal him if he calls out for it.

EDIT: That reminds me...do you allow retraining of maneuvers at level-up?

I basically use the pathfinder rules for retraining so you can retrain any time you want as long as you have the gold and can find a teacher.  It's usually not that difficult to find a teacher in the world you started in.  It would be more difficult in other worlds that don't have your class.  Like Knight of the Rose would be best retrained in DragonLance.  It would be highly unlikely you'd find a KotR in this world.  New Crobuzon is basically a Pathfinder world so it would be more difficult to find a crusader but not impossible since 3.5 and PF are fairly compatible.