I like the idea he doesn't work that hard actually. I think he's that good he doesn't need to be one of those "live and breath football 24/7" types who (and I've seen it in my workplace too) are all too often trying to cover up for their own inadequacies on the job by working over-hard.
On the goals, according to Gana Koeman has only recently emphasised more of them getting on the scoresheet so since Koeman is an extraordinarily effective coach and people manager I'm pretty sure you'll get a much improved spread of goals among the players as the season goes on...