Whilst not entirely awash with various templating modules, CPAN probably does have enough to have covered most people's requirements. I would suggest that you set out what you think are your systems unique selling points, specifically in comparison with the existing toolkits, including but not limited to Template and HTML::Template: you will find a number of articles here that engage the differences between the available modules and their particular benefits.

In the end it might be better, rather than putting yet another templating module on the CPAN, to work with the authors of the templating module you feel is closest to what you have done in order to provide the features you feel are missing.

/J\

(has never felt the need to create a templating system in Perl)