The detail of the fern is still an issue, but of the variants of Kyle Lockwood's design that has been circulating, this colour combination is best.
Retaining the blue background and Southern Cross locates New Zealand in the South Pacific, the colour red (stars) is of significance in both Maori heritage and British, and this part of the flag can honour the old design.
The silver fern has become a national symbol, and has links to the land and our native flora. Perhaps too subtle a link, but the stylised koru version of the fern symbolises new life, which I think would be suitable regarding a new national direction and identity (maybe the unfurled fern could represent maturity - something to strive for - alongside unity - as we go from this point). The green could represent the land as valued by all New Zealanders - the significance to Maori, and the love we all share for the outdoors and for our natural flora and fauna, as well as the importance of agriculture to our nation's history (and future), and the value we place on conserving and treasuring the natural resources with which we have been blessed.