Remember how the haters used Ighalo getting passed a shattered Chelsea defence in the 90th minute to critise Martial. that's not against ighalo mind you - just highlighting the hate against martial.
Personally- I believe the more we use this guy to his strengths than his weaknesses, the better he will be whilst coaching him better to work on his flaws.
Let him play deep and let the other forwards make the runs in to the box from out wide - let Martial decide to either make a late runs in to the box or wait for cut backs around the spaces that have not been taken up.
I think that's how you unlock the consistency to his game.
What we saw from Rashford this season as a inverted forward/winger was his most natural game & likewise when martial was playing as a false 9 next to him it was the same - though Ole wasn't allowing him to drop too deep nor was playing a proper right sided forward all the time.
If we fix this - he will be more than good enough for United atleast as a one to one competition of tactics to a more traditional striker vs a false 9 like Martial. Good to have the ability to have different tactics & different abilities in our set up like that.