Graphical display of points influence.
For example, when Sungho: 5 points, Sumin:20 points, Leigh:100 points
Than Leigh will be showing as gigantic circle, Sumin as tiny circle, Sungho as tiny dot. Ultimately people can customize how they look on the map.
This will be interesting if it is well developed with clan system.
Community and this map will be the key features in this service I feel like.
Chatting service at the main could be fun.