How is enlightenment or mindfulness reflected in the functioning of the aggregates?

How are the aggregates affected by a person's becoming enlightened or more enlightened? I'm guessing that some aggregates (e.g. "form" perhaps) are not affected, and some are. I'm asking, hoping to better understand what an enlightened state of mind is, or in what way it functions differently. How does "mindfulness" affect the aggregates, what's the change (in the functioning of each aggregate) depending on whether or not you're being mindful? Is this a wrong question -- were/are the "aggregates" only taught in the context of their being something inconstant and not worth attaching to?