Configurable SPF default template + automatically include assigned IP to SPF (not just main shared IP)
At the moment SPF record changes are limited to post-provisioning or modifying SPF.pm (method 2 of http://forums.cpanel.net/f5/external-mail-server-spf-207622.html). I have the need to add Blackberry SPF as the default include SPF record. I've seen people needing to add more mail servers for smarthost purposes.
The proposed method 2 actually can easily solve this, but it won't be pretty because in case SPF.pm does get updated, it might lead to another problem which admins may not remember. I don't think there is a notification mechanism in place to inform the admin in case any files listed in the /etc/cpanelsync.exclude gets an update through upcp script. This alone can be another feature request.