It's happened before, that a writer introduces a never-heard-before superhero team of a country not known to have one, when the title character or team visits that country, for purpose of plot and interaction, before that team serves its purpose and is never heard from again.
For example, in Invincible Iron Man #2 Fraction debuts the Triumph Division of the Philippines (where I live) when Stark flies to Manila. After saving the populace from a tsunami (of which we just witnessed the horror in real life), the local heroes receive accolades but are then blown-up a few panels later by a suicide bomber, with only a few lines of dialog spoken. They barely appear on the scene and then are wiped out!
In Fantastic Four #541 by Straczynski, Grimm moves to France and meets the Heroes of Paris. They fare much better here, aided by the Thing in battling a lovelorn villain. But again, to my knowledge, they never show up again.
Any more examples of one-shot local superheroes and teams, and would you want to bring them back?