We are ‘jack of all trades’ and certainly masters, just, of 2 of them !
Said at the start of the season set a shape that works more than the others over a season, then get the square pegs for the square holes. With the substitutions if they do not need to be made then do not just for the sake of it. Stability is todays requirement.
And re focus, use what happened to Walsall last season as the warning sign. Ignore much longer and trouble beckons I fear and we should all remember that season in div 1 going well by being ‘US’ and then someone got clever and what was the end result ?