I just updated to r190 and I'm really glad for the auto-completion of function names, animation names, etc.
That being said, I did some test and I was sad to find out that even when using the auto-completion, the names won't update if we change the name of the original, like it would when changing the name of an object or a variable.
For example, if I create an object "Box" and later decide to rename it to "crate", the name will correctly update everywhere I use it. But if I create a function called "doSomething" and later decide to rename it to "doSomethingElse", the name won't update in all the places I call that function. I have to manually find and replace all the places I used that function, which is tedious.
I uses function a lot, since they are so practical, and it would be nice to have a way to easily change the name everywhere.