issue with define('FORCE_SSL_ADMIN', true)

@Eugene Manuilov

Noticing a possible logic issue that I think would be very helpful it were addressed.

Senario:

http://mappeddomain.com

maps to http://mainsite.com/mappeddomain

Issue is if in the wp-config.php file I have:

define('FORCE_SSL_ADMIN', true);

Now if the user goes to:

http://mappeddomain.com/wp-admin and there isn't a ssl set up for the mapped domain, there will be a security issue warning.

Instead of a security warning showing up, i would like it if there were some alternate toggle-able setting to force the login to go to

https://mainsite.com/mappeddomain/wp-admin in the event that the toggle isn't set stating that https exists for the mapped domain.

Thoughts?