It is indeed and all comments are welcome

With that said
Bugzilla Main Page is a place for RFE (Request For Enhancements) and Buglets to be placed. The Zimbra team monitor that site and the Project Management team prioritise requests based on it.
That behind said with respect to the comments you have made, which I believe are valid, there are other aspects which should be addressed. I agree locking a screen can be bypassed, as much as protecting a document or spreadsheet, hence the suggestion that the whole drive is encrypted. The technology is very cheap now, and a single investment can protect everything you do on your computer.
Everybody takes security very serious these days and I am sure you questions will not go un-answered by the Zimbra team, but as mmorse said in your previous thread there are other ways of securing your confidential data.
Best wishes.