I'm not quite sure where I'm supposed to post suggestions for the documentation group. I hope that someone more knowledgeable will pass these along.
1) - wp-config.php statement that 99% of time won't need to change "localhost"
I suggest that this ought to be modified so that it says for local installations this is true. I'd bet my experience is more generally true that when installing on a remote hosting server it IS necessary to change it.
2) Changing Directory Index
On my remote host the default "Directory Index" does not include "index.php" as a file to search for. WP therefore does not behave properly. I had to add "index.php" as an acceptable file - and then wait about 10 minutes thinking that I hadn't succceeded before WP began to work as designed.
This information may be buried somewhere in the docs, but I'll bet it applies to more than me and should be a bit more prominently displayed.