A) not more, just different. But yes it is compatible
C) yes, provided you have learned how to properly bail on a lift.
D) Hard to say in short answer form.
E) again hard to say in short answer form
Olympic lifts require a far, far greater flexibility, mobility component than powerlifting. In that context they are fantastic for general strength because they help keep you "loose" instead of stiff and inflexible--because this is required to properly perform the full lifts in a much greater amount than squatting or deadlifting (and especially benching)
They work a much greater explosive component and power output than squatting or deadlifting in a heavy/max strength zone. Much of that could be overcome with use of true speed/dynamic days for squats and deadlifts, but the complex nature of the olympic lifts demands whole body coordination on a greater level than powerlifting, as complex as a perfect squat or deadlift form can be.
So for sports where explosive power is desired, yes they are a huge help ONCE properly learned.
They are draining on the nervous system, but you can get a greater training effect IMVHO at a lower intensity with them than you can the powerlifts (not counting bands etc., which also unfortunately severely increase the CNS drain and recovery needs).
A properly executed snatch does not need to be maximal to train power and explosiveness. And the Olympic lifts are excellent for maintaining whole body strength.