I think that game would be way more interesting with these 2 features.
For example there could be a Guild Cup where every guild member compete with each other in order to become Guild Champion.
And afterwards there should be a Championship League made solely out of Guild Champions.
Or a number of top players ranking from each of top ranking guilds if there are no enough active players etc
Entrance condition in a Championship League for each guild could also be successful victory in a Spider Guild Event.
Absolute Champion of the Championship League could also be promoted on a Main Page Menu as a special reward for his achievement.