okay, thats what i wanted to hear, but...
the bladebound alters the "arcana pool" class feature by splitting it with your black blade, but the spell dancer part alters the "arcana pool" class feature by letting you choose to enhance speed, ac, various movement abilities etc... instead of your weapon.
also, the hexcrafter alters all of your "magus arcana" by allowing you to take hexes from the witch class. but the bladebound removes your third lvl "magus arcana".
are these not considered altering/removing the same class feature?
am i just generalizing class features too much?