What is Australian cricket team doing? New Zealand bowled them out like South Africa what is goin on? ?

Just seen March fall down fielding in the one day match with New Zealand hamstring problem now youd think selectors if hes injured bring on Phil Hughes nsw opener hes juts made 151 fro nsw and 84 not out currently hes a top young player in great form so why not have Warner and Hughes together and lets make a competitive score for once?