[Ulzgoroth]

Three remarks, unrelated:
1) I do not see any justification for the time...thing being a function of the number of combatants. If two groups of three pair off and fight, there's no reason for those sub-fights to be less intense for the presence of the others. (I find I tend to view the determination of scaling factors like this with intense suspicion. I don't believe I'm wrong to do so, but it's worth mentioning.)

2) It seems like you probably intend that "non-discrete" actions are, in a sense, really components of a larger multi-second action defined by one "discrete" action? If so, you might want to say so explicitly.

3) Of the "discrete" actions listed only one of them is a thing GURPS would tend to say takes one second. Picking a lock and driving a vehicle to a place are both longer than that pretty much all the time, and Intimidation probably usually is as well. 1 second lock-picking likely entails a -10 penalty...