We get Concacaf
CONCACAF has 6 qualifying games left. Fingers crossed I reckon Canada (FIFA ranking 40) or Panama (63). At a neutral venue, full strength, one off have a real shot!
https://us.soccerway.com/international/nc-america/wc-qualifying-concacaf/2022-qatar/2nd-round/r44081/
https://en.fifaranking.net/concacaf/ranking.php
Wonder if NZF & Hay will try plan now for 'CONCACAF simulation' opponent, January window. Haiti (FIFA ranking 87)? They played in Bahrain a few months back. Trinidad & Tobago (100)
Top 8 ranked sides in CONCACAF, are the 8 teams in their WC qualifying final stage that finishes March window next year.
Or just stay with AFC, CAF opponent rumours - given is some top 100 CAF teams maybe available.
A real hard quality friendly early days June, about 10 days before 13th-14th June playoff, also shapes as a must game somewhere in Europe. Should be plenty of options with most teams having well finished WC qualifying. Even 2 friendlies from say late May to give all of a 23-30 man squad a run, as the jump in quality & intensity from that March OFC tourney to Panama or whoever will be huge.
FYI - Curacao have a FIFA ranking 80. What a handy choice as a friendly they may turn out to have been. Curacao only lost a 2 legged playoff to Panama June this year on aggregate 2-1, meaning Panama went though to final stage qualifying.