We did change it. Replacing Smith, Forss and Mowett was the right call. We brought McNair off for Crooks, should we have done that too on 66 minutes?
The only alternative would have been to bring Crooks on for Archer earlier, but there's no reason to suggest that would've changed the result.
In fact, Steffen should have gone up for all the free kicks and corners. He would have at least scored one. Anyone can claim their hindsight subs would have worked out better, which is a viable opinion when there's genuine game changers on the bench.