(In case the request is filed under the wrong component, because it's pretty hard to figure out the right one, this is the URL in question: http://[build]/job/pipeline-job/job/core/view/change-requests/job/PR-427/1/flowGraphTable/ )
I think the tree view on the "Pipeline Steps" page should let me collapse nodes for compound steps which were completed successfully, and then default to them being collapsed. I only ever come to this page if I'm looking for why a build failed, or if I'm trying to get some decent indication of the progress, but I don't think many people would be coming to this screen to look for information about successful steps.
Currently, I have to scroll down one page at a time until I somehow spot which icons are different to all the others, which is time consuming. Occasionally, I haven't even been able to find the line which is different, and ended up copying the source of the page so that I could at least use search in a text editor to find the line which was different.