Network admin can collect statistics networkwide with one GA account and let the regular admins collect statistics on their own sites with own account
Yes, I will include your translation in future releases. E-mail me at
niklas [at] darturonline [dot] se
This plugin have only been tested with the subdomains installation of WordPress Multisite.
But I can't think of any reason why it would not work with the subdirectories installation so if you are up to it, feel free to try. I suspect that it will be harder setting up filters in Analytics to see data from a specific site with subdirectories installation.
Yes, according to a user who have tried this it works with adding only one row of text to the tracking code and setting domain name to "none". More on this on the plugin website.