For a quick solution:
• Populate the name and email inputs with the current user info via jQuery.
• Hide name and email inputs via CSS
For those who might be interested here's a quick rundown of what I did.
jQuery to populate the fields
var name = '<?php echo $user->name ?>';
var email = '<?php echo $user->email ?>';
$('#CommentForm_cite').val(name);
$('#CommentForm_email').val(email);
CSS to hide the fields and labels
#CommentForm_cite,
#CommentForm_email,
.CommentForm_cite label,
.CommentForm_email label{
display: none;
}
Keep in mind, I'm using this on a protected page, so all visitors will be logged in.
You could add some logic to check if the user was logged in or not, and show the name/email fields to guests.
You'd probably want to hide the fields and labels via JS instead of CSS in that case.