You guys are a little ahead of your time with this, you might want to come out with a newer version as opensim continue to develop and is being used by more people and the use of sloodle becomes more main stream in opensim.
Where did you get that from??? "unlike wing chun chi sau which is based on hitting the opponenet" The whole exercise in Chi Sau in winchun is not to it the person, its mainly to build sensitivity in the arms.
Umm... not according to research.