[Andreas]

I'm also not sure that it is easier to hit your opponent with weak strikes. Though it would likely be realistic to make it easier to do rapid strikes when only using a small part of your strength (it makes sense to be able to attack much faster then since you don't need to adjust your posture between each attack). Perhaps something like halving the rapid strike penalty if you only use half your ST.

However things changes when you are only trying to touch your opponent or are only using a very small part of your strength. It gets very hard to defend against someone trying to touch you and as can be verified by everyone, it is much easier to touch a small object than hit it with a full-force strike. However that might just be a case of taking extra time to perform the task. It might be realistic to allow using the Extra Time rules in combat when using at most a fourth of your ST.