Another related issue which probably isn't currently taken very seriously is helping people for whom it is especially difficult to find partners. While people who stay single for extended periods (5+ years?) despite of looking for a partner are numerous in absolute numbers, their volume is probably not high enough for dating sites to develop specialized features to help them. It might be worth of effort to inspect what kind of dating site features or other type of actions would improve the chances of these people to find partners.
Another related issue which probably isn't currently taken very seriously is helping people for whom it is especially difficult to find partners. While people who stay single for extended periods (5+ years?) despite of looking for a partner are numerous in absolute numbers, their volume is probably not high enough for dating sites to develop specialized features to help them. It might be worth of effort to inspect what kind of dating site features or other type of actions would improve the chances of these people to find partners.