But I much prefer driving in conditions where the traffic keeps moving and the idle stop isn't needed
Yeah. I've become quite adept at controlling it at roundabouts. Banbury rush hour varies quite a lot and it takes experience to work out if a queue is slow moving or 'stuck'. Sometimes a long queue for a roundabout is slow moving. Sometimes a short queue is stuck.
The trick on this stretch
is to look out for pedestrians hovering around the traffic lights. The naughty monkeys sometimes press the button. How jolly inconsiderate of them
I like to let I/S do it's thing but I have to be sure that it will be off for at least 2 seconds to avoid wasting fuel. Still - it all adds to the fun of driving in my view