I always wonder when we say a coach has no plan B. It was levelled at Mowbray but I dont really know what folk think a plan b is.
I have never seen a coach who doesnt try different things in a rough patch. Mowbray was trying things, Hume rolling into midfield, Huggins driving into the final 3rd, narrowing the pitch out of possession etc. They were all tactical changes. If we want to see coaches completely switch formations I think that is quite an ask and probably unrealistic. Generally speaking a side is designed around a style of play, like we are. You coach shape week in week out, jumping to a different shape suddenly isnt really feasible, and less so with a young squad.
I think if a coach can think on their feet in a game, and tweak a position to counteract the opposition, or change an instruction to exploit a weakness that is the sort of flexibility we should look for, in my opinion anyway.