I'd love to see a list of all of a person's relations as well!
If you are interested in specific relationships (as might be the case when you are editing a larger tree with multiple branches and a lot of generations), there is something resembling this feature. If your founder/default person was Jane, you can click onn Joe and select the button "Show relationship to" on the sidebar, above the window that displays information like Joe's birth date, name and so on. This will show the exact way in which Joe is related to Janne. This is especially helpful when you are on a larger tree and the relation might not be "First Cousin" but "Joe's first cousin's grandmother is the half-sister of Jane's great-grandmother". You can also choose to display blood relationship only or include other bonds, i. e. the wife of Joe's uncle is related to the partner of Jane's cousin.
While this can be useful, you can only show the relation of one person to the tree's founder (which you could always change via "Tools", but this can take some moments) and only one person at a time. A feature to just list every relationship (or at least direct ancestors and descendants and siblings) would be so great.
