I wouldnt put a number on "Enough" as long as they are eligible bring em on board regardless of how many.Im not talking about 3rd or 4th generations im talking about the current group of players a time may come where you wont have Polynesian players whose parents were born in the islands
and they may not feel a strong connection to the Islands
I said nothing about destructive being best all I said was destructive and ill take these destructive players anyday it's what makes Kaino, Nonu, Savea, and Fekitoa.
Ive met alot of the Islanders who have played or play for the All Blacks and Super Rugby most of my Family lives in NZ i've lived in NZ but thats beside the point. You wont get it because you're not familiar with the culture. Later down the track with alot of these players marrying Europeans in NZ you may not have this problem due to the majority only being half liand seeing themselves as Kiwi.
Why else would these players swap over and play for Tonga or Samoa for free? They will have to pay their own air fares to get to games. Like I said before this is a part of the culture you wouldnt understand. You may have alot of Samoans, Tongans and Fijians in NZ and Austrlia yet they keep their culture they still raise their kids the way its done in the Islands they speak the language fluently. No matter what country they are citizens of they would still call themselves Tongan or Samoan. You think all those fans that showed up at airports are from Tonga or Samoa? or Kiwis of Polynesian descent who decided to show up in Samoan or Tongan colours instead of Black.
All im saying that no matter what country you live in Some cultures have a stronger bond or a spiritual connection to the place where their ancestors are from. Like stormer pointed out alot of middle eastern people feel this way and so do Polynesians. So these players who wanna represent Tonga or Samoa forking out money from their own pocket good on em. This will do wonders for the kids back in the Islands.