We also lost 5 games by under 2 goals and yet would have played finals if Port had beat Carlton in the last round (admittedly this arises from the Bombers suspension ).
Better perhaps to say that the Crows would have played finals but for one right-angle bounce of the ball.
As for losing 5 games by less than two goals ... it seems to have been missed in this thread that the 2012/2013 preseason for the Crows stressed bulk and strength above all else, and as a consequence the Crows were indeed strong but also slow (they had to chase a lot) and therefore did not run out games well at all.
Different emphasis entirely for the 2013/2014 preseason, where the Crows were running the equivalent of a marathon every nine days or so. The players are lighter and there has been more emphasis on skills.
IMO this training factor alone will have a bigger impact than any new players coming in to the side.