As attention grows towards the disparities and underrepresentation of minoritized groups within undergraduate STEM education, there is a need for understanding how university calculus program stakeholders perceive the issue of increasing diversity. Calculus is a subject crucial to many STEM disciplines, and thus can play an outsized role in facilitating necessary change across STEM fields. We present a research-driven framework from a thematic analysis of interviews and focus groups with calculus program stakeholders (students, faculty, staff, and administrators) at two universities in the United States. The framework juxtaposes various stakeholders' motivations for diversifying STEM fields along critical and dominant axes with four primary recipients that benefit from diversifying STEM. This framework prompts critical analysis of increasing access and achievement within the current system while also attending to the need to fundamentally change mathematical structures to bolster individual identities and increase the power of marginalized individuals in STEM disciplines.