Trevor Mallard, a little flippantly I think, has suggested North Park.
Today at HCC - http://www.stuff.co.nz/dominion-post/news/hutt-valley/9766489/Hutt-Council-asked-to-back-Petone-stadium
and so the process starts.
Be fascinating to understand the motivations of Carl Bakker, see article. He runs the Petone Urban Environment Association (PUEA). They stifled the PWMC development. Friend notes that they were, as far as she can tell, silent on the Ryman aged care village over on the old 'Petone Tech' site.