It's going to be tough to make it in this league and not have kicking as part of your skill set.
But that aside, don't entirely disagree with you. Like I said, I'd have him in. But would he really have helped? I don't think so. He may have even hindered. If he took Mundy out of the middle at times it may have been a net loss because, and contrary to your implication, Mundy was probably the only midfielder who won his own ball and delivered with precision and purpose - not always of course, but by far more than any other player on the day.
I know everybody likes that new car smell of a young player that's showing heaps. I love Blakely to bits and think he should play as much as possible while looking after his development etc., but I'm with Ross in terms of that particular question.
Of course, we're dealing with complete hypothetical, so there's no definitive right answer, I accept that. But from where I see it Blakely would have made little overall difference to the real and numerous problems on the day.
He was replaced by De Boer though. Do you think De Boer was more effective than Connor would have been? Hypothetical I know but at least Mundy wouldn't have had to play such a lone hand in the middle and whilst Blakely's kicking isn't precise, nor is De Boers and at least Blakely has penetration on his kicking