Except that the FIFA Rankings for September 2010 don't go back 25 years, only four.
Indeed, they don't go back eg to the late 60's/early 70's, when the ROI team went 6 years (to the day) without winning a single home game, competitive or friendly (including a 20 game run where they didn't win home or away).
In fact, why stop at 35 or 40 years? If you were to go right back to 1921, when the "splitters" broke away, I suspect you'd find that our complete record compares quite respectably with yours.
Who knows? The example of West & East Germany suggests it is hardly a foregone conclusion.
Anyhow, whatever the ranking if my team were subsumed into a UI team, it would still be lower than if we were subsumed into a UK team, and I most certainly don't want that, either.
No, unlike you, I'm sufficiently happy with my own team not to want to see it disappear.
It's something to do with our achieving meaningful victory against half-decent teams every now and then...