At the risk of embarrassing myself: The ":s" verb for easily viewing the size of directories / files, the overview of multiple directories at once, the gitignore handling, at a glance. There might be more, but I would have to spend more time with it.

disclaimer: my definition of "devops" is sitting in a remote terminal for where I run docker and chasing down which files take up all my precious space, or not remembering where I put something, which makes the tree overview very useful. I know I could achieve this via many other means also (and did before Broot), but Broot is also very pretty, so I quite like that, too :)