I'm working on a practical review implementation on this! Great to hear others are thinking along the same way.

The main problem here is that a model that wildly fluctuates with 60% - 100% - 80% results will have the same wilson score as one that repeatedly scores 80% - 80% - 80%. So the 'confidence interval' bar is meaningless.

I'm not that well versed in statistics, but a standard box plot is probably the best alternative

Both ways involve sophistry. If you don't like dirty tricks, statistics isn't for you.