[coldtea]

>What do you do if you want to add extra arguments when your cursor's at the end? Navigate back near (not to) the beginning?

Yes. In most shells it's trivial to go back by a word (e.g. skip in front of the path with one shortcut).

That said, this happens so rare that it's not even something that ever registered with me as a problem. I know what arguments I want for ls. And if I don't it's usually some bizarro infrequent flag that I have to look up how it's used anyway.

And other programs where it would be actually useful don't allow it anyway (having flags after the "main" argument). Git, for one.