Put Munro back at 4 or 5, so he can avoid a new ball and top line bowlers, he's a pinch hitter and not any more than that. he's not an opener as he has no technique.
This is exactly the problem though - the top order isn't consistent enough and the whole innings relies on one bloke having an absolute belter to keep us in the game.
You're better off with eleven blokes who can score 20 each than four blokes who get single figures and one bloke belting a rapid-fire 50.
Frankly if we're still relying on Munro coming in at five to give us a chance then the top order hasn't delivered a solid-enough platform.