One of the big reasons is the current post-Eisner staff at Disney are NOT big fans of Jessica Rabbit from the original film.
Not quite true, as Disney did talk about the film as part of their new Prop Culture show. They even had Kathleen Turner (the voice of Jessica) appear. I told you this before.
the current staff at Disney is concerned about hurting their family-friendly image.
Not really, based on their recent output with Marvel and Star Wars. Even their new film Raya & The Last Dragon is a bit too violent. One of their heavily marketed shows was about a woman suffering a mental breakdown caused by loss of everyone she loves.
Would people be complaining if Disney made Jessica a more modest character? Would they be making a big stink over Jessica's redesign?
More likely, Disney would still keep her original design, but may lessen the sex appeal by reducing the breast size.
Back in 2019 people made a big stink over Sonic the Hedgehog's original film design for the SONIC movie that came out last year. People complained about it online and Sony listened.
People complained because the original design was terrible. Even Sega complained about it. The uproar was enough to threaten the film's box office, which is what ultimately mattered.
It's NOT PC anymore to sexualize female characters for what's supposed to be kids'/family entertainment.
That might have to do with more women being involved in animation production than in the 80s and 90s.
Besides, I do not expect Space Jam 2 to be even good. Honestly, the first film was terrible; I re-watched it recently for the first time since the 90s.