HD spending is ressources. Exhaustion track is also a ressource.I'm of the opinion all those should be at will, including spells which have the material component as a cost.
BUT
They should be tied to HD spending and the exhaustion track for attempting to use beyond the acceptable limit.
i think they're implying delete the basic fighter as it only 'just fights with weapons' and spread the toys you would give to the fighter among the other classes that fight with weapons but have more aspects besides that.
like
the rogue is 'sneaky fights with weapons'
the barbarian is 'angry fights with weapons'
the paladin is 'divine fights with weapons'
but the fighter is just 'fights with weapons' to them so why have it?
Thats why I liked the 4E Fighter. You are "fighting with weapons to protect characters/space". Paladin needs divine stuff to protect allies, fighter can do it alone with his fighting skills.
Narrow the fighter more down, not a general "I hit with weapons", but something more defined like "I protect"

