I had the discussion with my brother yesterday, who is essentially a fence sitter on the question.
What I put to him was, do you think Barkley, Stones, Oviedo, Naismith, Browning, Pennington, Garbutt, Galloway etc have all come on under Martinez? For all his other faults he looks able to improve players to me, which is essential.
Given we have so many players under 22/23 if he can continue that process we are only going to improve. First and foremost he is a good coach, who improves players over time. This isn't always a linear process though.
I remember when he first came, when asked about Barkley, he said he didn't mind him making a mistake, as long as he learnt from the mistake, and if it was a mistake trying to do the right thing, he didn't stop looking for the ball. That is a microcosm of the strengths and weaknesses of Martinez.
He gives young players opportunities, and doesn't go for quick and easy solutions if they make mistakes, he allows them to play through it and work it out for themselves. This will see them come out the other end stronger, but in the interim period there may be some mistakes to rectify.
That was last season for me. A massive decline that we needed to learn from and improve upon. But a decline that saw Stones and Barkley cement places as 20 year olds, a 20 year old striker lead the line and players such as Galloway and Garbutt make their way into the team.
To accommodate that experienced pro's were shunted. With young players comes inconsistency. But I always harp back to the two things. 1) Has Martinez improved those players. and 2) Given the amount of good quality young players we have, how much further can they go?