John Ament The idea here is that you can see more stages onscreen without needing to scroll right (a common issue for very complex builds with many stages) – it's covering this:
Can you make it take up more screen real estate, maybe based on the number of stages in the pipeline
In my opinion, we don't gain much just by stretching the stages wider arbitrarily... but there might be value in allowing them to grow and shrink a bit if they have content that can use the screen real-estate.
I think that should be treated as a separate RFE though because it requires more significant CSS layout changes in multiple changes, and needs testing under a variety of circumstances.
As starting points:
This sets the width of table cells (even if max-width is set, they don't grow).
This sets the overall width of the table cells in view, as does the line below it:
Which is unfortunately hardcoded in JS to give 10em to each stage: