Configuring home page components for all users

Is there any way one can change the default home page configuration for
all users.

I can change the configuration for myself by going to home page and
clicking Preferences, then click “RT at a glance” which brings up
configuration section. But this needs to be done for all users,
including ones that may get added in future.

Changing “Homepagecomponents” in RT_Config.pm or redefining
Homepagecomponents in RT_SiteConfig.pm does not seem to help.
I can probably use a kluge (which I am trying to avoid) where I can
change the following portion in /Elements/MyRT by ignoring some portlets:
% for my $portlet (@{$portlets->{body}}) {
<% _show($portlet) %>


% }

I am trying to remove “10 newst unowned tickets”, “10 highest priority
tickets I own” and “QuickCreate” from the home page.

Is there a better way?

Thanks