CGI::Carp fatalsToBrowser alternative

[Xho Jingleheimerschmidt]

I'd like a kinder, gentler version of the die implemented by CGI::Carp
qw(fatalsToBrowser), for calling explicitly when I detect invalid user
input of some sort. I can use the existing features of CGI::Carp to
change the footer for the message displayed, but can't seem to change
the header of "Software error:" to be something more like "Invalid user
input, please fix and try again:"

I'd like to keep the other features of CGI::Carp's die if I can, like
teeing to stderr with a timestamp, printing a header if necessary,
protecting special characters in the message, and the things that I
don't understand which seem to be designed to work with MOD_PERL.

Is the best bet just to copy fatalsToBrowser and make some changes to
the copy?

Xho