I like Mikayla a lot, but her shot was so fundamentally flawed that it’s difficult to imagine that she would ever be able to fix it. While she might have been very good at 90% of what she did, the fact that she was such an ineffective shooter undermined UConn’s entire offensive concept of spreading the floor, moving the ball and getting the best shot. Teams could basically back off Mikayla and play 5 on 4.
As you point out, many players at UConn became much better shooters over time: Kelly, Mo, Kia and even Megan last year. But with all of those players the adjustments they had to make were minor: shooting in rhythm, squaring up to the basket, slightly higher release point, etc.
In Mikayla’s case, she basically had to learn how to shoot a basketball all over again. I suspect her funky shooting motion where she slings the ball from her waist was something she developed very early on when she was young and probably had trouble getting the ball up to the hoop. Unfortunately, as she developed as a basketball player either no one ever tried to change her shooting stroke, or she simply resisted the change because she was uncomfortable with anything other than what she knew.
Mikayla has now been shooting the ball with her unique release for 10-12 years. I just don’t think it’s possible for her to engineer a major overhaul of her shooting stroke at this point.