In a scenario like the one you've described, where Atom, the Gold Cosmic Fury Ranger, is at risk of dying, it would depend on the themes and story direction you want to take in your narrative.
If the story aims to explore themes of sacrifice, camaraderie, and the emotional weight of being a Ranger, it might enhance the drama to have the Pi, the Purple Cosmic Fury Ranger, confront the possibility of reviving Atom. This could lead to moral dilemmas, highlighting the bond between the Rangers and the costs of their battles.
On the other hand, if you're aiming for a story that emphasizes resilience and the consequences of choices, it could be powerful for Atom to make a noble sacrifice, reinforcing the idea that some fights come with great costs and that not all heroes come back.
Ultimately, the decision should align with the character development and emotional arcs you've established throughout the season. Each choice can lead to compelling storytelling, so consider how you want the audience to feel and what message you want to convey with Atom's potential revival.