Hi Alison

This is currently in the development backlog with a tentative fix for Sage CRM 2023 R2. 

But a little bit of playing with themes and JavaScript may help.

For example if you stick

.PipeLinehidden-link {
display: none;
}

localhost/.../RedefinedStyles.css and then

and a customer script 

var h2Elements = document.querySelectorAll('h2.caseh2');
for (var i = 0; i < h2Elements.length; i++) {
if (h2Elements[i].innerText === '0') {
h2Elements[i].parentNode.classList.add('PipeLinehidden-link');
}
}

This will hide all the stages that are at 'zero'.  You will need to play with this further because it won't look pretty but that will get you on the way. 

one thing that ive noticed on this is that it shows none when there are opps where the stage is blank - have a look in sql for the blank ones and update to a valid stage then metadata refresh and none should then no longer show