Tiger will not have any wide bodies anytime soon. Jetstar wide body ops,are only profitable when masked by giving much of the operating costs to qantas. When it's not, look at it (Singapore, Hong Kong, Vietnam)
I think you will see the wide bodies stay premium market and eventually expand when the market/industry etc turn to profit. Tiger is for the lower bogan market which is single isle, lower yield markets. Maybe some 737 will got to tiger but when losing 2 million a week there won't be wide bodies for the bogans.
Ps maybe a name change as we'll I think......