Yes, simply override the language string using CB language overrides shown below and add more substitutions to it.
www.joomlapolis.com/blog/kyle/18701-language-overrides-have-arrived
The language keys and strings for account delete are as follows.
Subject: USER_ACCOUNT_DELETED_fda2dd
Code:
User Account Deleted
Body: NAME_NAMEUSERNAME_USERNAMEEMAIL_EMAILIP_ADDRESS_IP_33a41a
Code:
Name: [name]<br />Username: [username]<br />Email: [email]<br />IP Address: [ip_address]<br />Date: [date]<br /><br />[reason]<br /><br />