JDT did as well as the very experienced Mowbray in his first season at this level (compared to TM's 5 seasons with us and 20 odd more at this level elsewhere) with only half a pre season & an exodus of first 11 players to replace.
There were so many missed opportunities last season to get into the playoffs, the margin was that narrow. Hirst's missed penalty, Cov's handballing keeper, Hedges' rush of blood, Hyam's knee, Dingles' 1-shot 1 goal, the obvious handball by whatshisuglyface. They're what stopped us achieving playoffs, not JDT.
JDT did great overall IMO, I am v looking forward to this season. Individual mistakes happen, like A Wharton's crossfield pass straight to Millwall's goalscorer. Cut those out & score more goals, there's no reason we can't go at least 1 better this season.