In version 2.2, there was a check put in for the real name on line 178 of smf_registration.php:
OR realName = '$name'
Also, the realName field was populated with the Name from the registration form, instead of the username, on line 215 (which makes sense, since you probably don't want memberName and realName to both be the username):
'realName' => "'$name'",
I thought these were nice little fixes. Now, in 3.01 they seem to have regressed back to how they had been in 2.11. Was this a conscious decision for reasons I'm missing, or a mistake?