I'd actually be surprised if he doesn't get a look in, personally. Not saying he's the next Wynton, but he's getting decent minutes and exposure in a league that's miles above the Handy - and still better than the A-League (Ok, to third of the ladder maybe, but still).
Also, he's probably close to his mid-20s so if he was unwilling to commit in the hope the USA might call him, he'd probably reconsider.
According to Wiki he's been capped 6 times for NZ, but I'm not sure any of those were competitive matches and he's actually cap-tied?
Not the biggest Portuguese football fan out there but I'd like to think I'm pretty knowledgeable on rankings like this - definitely right that there is a huge discrepancy between the big three and the rest, but any Primeira Liga team would absolutely wipe the floor with us. Even Sydney would fight against relegation. It's the tiers below that are really trash however.
Tondela on paper is the weakest squad in the league probably, they would be a lower-level Championship side for context :)