Jumping on one case refers to focusing too much on a single situation or problem, without considering other factors or perspectives. Antonyms for this phrase may include taking a comprehensive approach, considering all possibilities and perspectives, and identifying multiple cases that require attention. Other opposite phrases may include avoiding tunnel vision or myopic thinking, being open-minded, and maintaining a broad perspective. A comprehensive approach may involve gathering more information and taking a step back to consider different viewpoints. By doing so, we may be able to identify other cases that require attention, and develop a more effective and nuanced solution.