Interesting read as always, Bob.
Yes, we definitely changed our mindset after that 5-4 at Charlton. We won 13 of our next 18 games, which was an incredible run made more incredible that 12 of those 13 wins were by a single goal. We also didn't lose an away game during that run, kept 8 clean sheets and only conceded 12 in those 18 games. Obviously if you keep things tight at the back you've got every chance of pinching something at the other end. I recall us being outplayed at Birmingham and Leicester (those in particular though there were others) during that time but we pinched wins. The 2017-18 class of Warnock is doing the same in many ways.
That run effectively won us the title. We only won 3 of our last 13, maybe due to tiredness, maybe due to being found out, maybe due to our real ability shining through, and by the time we got to the Premier League, we didn't have the quality to stay up. Our Championship winning tactics of being able to keep clean sheets, grind away and hope to pinch something was not going to work. In 2013 overall, we won 14 out of 42 games in Championship and Premier League. Having all the grit and hard work in the world and hoping for a bit of luck at the other end eventually stopped working. Some say we might have stayed up had Malky not been sacked but I never shared that opinion. Cracks had began opening.
This gives me concerns with our current team. How much quality do we have should we get promoted? Zohore? Maybe. Mendez Laing? - Maybe. Gunnarsson - definitely (but he might not be with us unless we nail him down on what will surely be a big wage). Ralls? - Maybe. Bamba and Etheridge would be ok. We can see we've got a bit of a lack of quality, but are working hard enough to negate that and grind results out. If we did go up, I don't see this team as one that could be tweaked for Premier League survival. I think it would need some major investment, something we didn't really do 4 years ago and hardly spent what we did all that wisely.