What I've always found mildly amusing is it takes x amount of time for the keeper to resume play with a GK.

If one team is ahead the losing GK will now be hurried along by the ref even if in real time it's barely any difference to how it was earlier and no one was bothered. It's often merely the perception. Some of course will take the piss.

Used to happen a lot when we had a long throw, we would take 40 seconds to get the ball in to play but if we were behind and the opposition took a few seconds the fans and ref would be getting involved.

Simplest thing to deter actual time wasting is the clock just stops.

I like the new law when the keeper has it in his hands as long as it is enforced.