Referencing WordPress Codex

Would it be a good idea to use my own functions instead of Codex, then create a reference file where my functions call Codex? It would create a single point between a WordPress Extension and WordPress. If WordPress then changed the name of a function, who ever was updating my extension would only have to change one line, instead of finding every occurrence of that function name within all of the extension files.

function my_function ($info) {
wp_function($info);
}

Pros? Cons?