First Comment plugin necessary in WP 3.0 MS

Is the First Comment plugin necessary in WordPress 3.0?

Under WPMU, the First Comment plugin would replace the default first comment from Mr. WordPress. Now, all new blogs are getting two comments on their Hello World posts – one from Mr. WordPress, and the second from the First comment plugin. I see no way to disable the WP first comment, so it appears the best way is just to use that built-in first comment feature in lieu of the mu-plugin.

Is there any benefit to using plugin instead? And if so, any ETA on fixing it so it overrides the WP comment function?

Thank you for your feedback!