I’m sure to regret treading in these waters, but I would rebut that alienating your core fans, however insulated and fragile they have revealed themselves to be, in the hopes of expanding the audience to consumers who have previously a) enjoyed your product despite the fact they didn’t see racial/gender characters more closely resembling themselves or b) ignored your product because they don’t particularly care for the genre trapping doesn’t seem good business.
Alternatively, the Star Wars movies are westerns that aspire to be Wagnerian Operas or Shakespearean dramas and, if you follow Campbell, hope to tap into the universal subconscious by using universal archetypes. You shouldn’t need to include a fat jedi in order to cultivate an audience, because your story or characters are familiar in 20 other ways. Including a fat Jedi, or a bisexual or gay character (if either isn’t in service to the story) just feels like cheap pandering. Unfortunately, too much of modern entertainment seems to feel like tokenism and I think it immediately rings false.