Unsafe certificate protection in Android? Maybe I'm wrong. If so, please let me know.

Here is my question. I've followed the instructions here and installed my personal certificate stored in a pfx file (PKCS#12) in my Google Nexus (ICS 4.0.4). A little problem here is that it is not listed in "User" tab in "Credentials". It works anyway.

But the big problem IMHO, is the way Android protects your certificates by default. It only requests the user to set a pattern, PIN, or password to unlock the screen. I'm missing a password-protected access to my credentials like IE does in Windows for instance every time your certificate is requested by a site.

Is there a method to enhance security of your certificates in ICS?

Thank you
Not sure if it helps any, but have you seen CACertMan (also on GitHub) yet?