As luck would have it our group, Frozensand, is doing “behind the scene”, type video blogs as to our conversion of Urban Terror from the much older game engine, idtech3, to Unreal 4 and having access to that engine on the same day as everyone else and after an extensive audit decided to go with the Genesis 3 framework as to “our” character development pipeline.
As to our reasons as to available options I cover “some” of the reasons we elected to go with this route.
Sorry for being wordy but there is a lot of different reasons over and above having a single character in game.
Keep in mind that Genesis 3 is not a turnkey solution but rather a framework as to what is required as to the parts that makes up a character.
Some renders and examples of the G3 base mesh in UE4