I'm not too bothered by the speed as long as there is still clarity and rhythm. Can be fast,slow leisurely,or whatever as long as it sits right still, if you know what i mean. As i said we are lucky as plenty of fine players around.
    Telling the young fit and able not to play too fast is pointless when they have the chops, imo. Most mellow a bit as they age I'd imagine. Hurts my wrists and fingers watching some of them.