You may want to consider symbolic versus numeric computation separately. Numeric is difficult to port to new hardware and compilers correctly (especially if the port is to specialized hardware) and may hinder future growth of your module(s). But symbolic would be more in Perl's line. You could either build an interface to something like Mathematica, or roll your own.

Second, I'm not sure how big the audience would be for something like this. On the other hand, that never stopped anyone from building a cool new module!