> The --skip-config flag will work only if you add that incantation to wp-config.php.

Right... which was the whole point of the pull request (fcbd57e809a0c05979eac2cb56c5703a02227cf1):

1. `wp-config.php` is tracked in version control, including the MS constants.
1. Core requires a multisite instance to be installed in three-ish steps. 1) Install core, 2) Define `define('WP_ALLOW_MULTISITE', true);` in your `wp-config.php`, 3) Copy and paste more constants (and MS tables / options are installed)
1. WP-CLI destructively adds the MS constants to `wp-config.php`, regardless of whether they're already there.

I understand your desire for perfection, however I still have yet to see a better "incantation" to include in my `wp-config.php`. Instead, [you recommend](https://github.com/wp-cli/wp-cli/pull/486#issuecomment-21054871) we roll this into `wp core install` which still doesn't solve the problem of not adding MS constants when they're already present in `wp-config.php`. Maybe it gets around the bugs apparent when you install MS in a two-step process, maybe not.

Please correct any incorrect observations I've made.