Needs more rainbow gradient on the text and <marquee> tags to do scrolltexts.

No, seriously, that's pretty cool. The next Kareha version will have several different template.pl:s and config_defaults.pl:s to make it behave in different ways, I'm thinking. The ideas I have is to replace Wakaba Zero with a kareha template and config, and also possibly add a blog/website news post mode. We shall see how much I manage to do - working on the Wakaba mode right now.