BuddyPress.org

@michaeltransmissions As you noted above, the ticket as been closed as wontfix on the UI but lead dev enabled plugin authors to create custom levels by adding a new filter. I’m sorry that there is no plugin that I know of created for your needs. You’d either have to create one or hire someone to do it for you or wait till someone makes it.

@michaeltransmissions
Being that this is an isolated bug on your particular installation that I could not replicate I am fairly certain it is a theme or maybe even a plugin you are using.
Edit:
@danpbp beat me to the question of the theme

@michaeltransmissions
I can’t replicate your issue I just logged in as a test user and deleted an account and the message displayed is:

test user1 was successfully deleted.

I am using the most stable versions of WP/BP and the twenty thirteen theme JFYI.