I agree why change something that isn't broken?
Has there suddenly been a spate of incidents that a change in handover/takeover procedure would have prevented?
In any case both seem too long for a handover in a busy tower/radar environment. For example I don't need to know the name of the atco I'm taking over from or his role as I've probably worked with him for 10 years and I wouldn't be taking over a position when I didn't know what sector it was already.
As for the abc one as you've described it I can't see why any atco at a tower needs to know that anyway that's the job of the airport authority.