If Power Rangers Cosmic Fury were to have a second season featuring villains like Emperor Grumm, Scrozzle, Broodwing, Mora, and Lord Zedd, it would likely continue the Cosmic Fury storyline while also incorporating elements from previous series to create a cohesive narrative.
Given the structure of Power Rangers as a franchise that often revisits themes and characters, Season 2 could be considered part of the Cosmic Fury series but could also serve as an evolution of the storyline, bringing in these iconic villains to challenge the new team.
Alternatively, if the narrative shifted significantly in tone, style, or location, it could take on a fresh theme and be branded as a different series while still maintaining the continuity of the Cosmic Fury universe.
Regarding the format of 10 episodes at 22 minutes each, this would fit well with the current Power Rangers episodic structure, allowing for focused storytelling while providing ample time to develop the plot and character arcs involving these formidable antagonists.
In summary, while it could remain within the Cosmic Fury series, the second season could also mark a new chapter in the Power Rangers franchise, potentially drawing connections to past series while allowing for new storytelling possibilities.