In Classic, I liked the level of details in the email the admin would receive whenever there was a new registration:
Public Name:
Login Name:
Email:
IP Address:
Member Number:
Child:

Is there a way to get that level of detail in Threads? If not please consider it a suggestion.

In Threads, all you get is:
A new user has registered at mydomain.com. To approve this account, please visit
http://www.mydomain.com/ubbthreads/admin/membermanage.php?returntab=1

With unlimited storage email accounts, it's a good way to keep record of old accounts and people you might not have in your CP.