Not sure if its possible to add this, but... I think it would be a pretty cool idea to have a song selection feature that selects a difficulty of a song and mods based on your performance/skill. Some people tend to wonder what they need to do to rank up and having so many options and so many songs its hard for some people to decide what to play to rank up. This would give people some guidance on what song to choose if they want to rank up. Again, i do not know if it is possible to do this, just a recommendation if possible.