A quick comment on the ratings - I don't see much point in the folks with 0.00 being listed - though that would take out Jamaica (who deserve a mention). As for sides like the Netherlands, Georgia, New Caledonia and Argentina - well they have played recently even if they may not be playing now. As time passes their results will presumably drop off the list if they do not continue to play or return to playing. If that happens then I have no problem with them being listed for the present.
As for Tuvalu - it was never a NZ territory. It is the old Ellice Islands (once part of the Gilbert & Ellice Islands) out in Polynesia and has been independent for at least 25 years. I NEVER remember them playing RL but perhaps, perhaps... Unfortunately like Kiribati (the old Gilbert Islands) the ravages of global warming and sea-level rises may make it a moot point.