We will always have periods well down rankings (ie 100 plus), as play fewer major point scoring games in Oceania and don't play many friendlies due to hassle of bringing a team together from diff sides of world. If left Oceania and had a team of largely euro based players like Australia then that would change somewhat, at least more opportunities for points and ranking climb
Would change slightly, but we still wouldnt be playing at every window under our current financial status. If anything it would cost us more having more players based in europe, for home games at least. Australias a big country with a large economy, with a professional league, and with FFA spending millions to prop up clubs. NZF on the other hand can hardly afford the $200k to bring a single international team into the country.