Again, how often will this come up? Exactly how many nodes actually use a number as their title? Seems to me like your making a mountain out of a mole hill. I'd have to say the chances of you linking a node by number that ends up being a node's title are statistically slim.
Now, I cannot use [nnn] for that, because some person might insert a node titled nnn, and then my article would refer to the wrong place.
That's what that nifty "preview" button is for. You can check to see if your links are correct.
the I.T. Ninja
Everyone has their demons....