Date: 2018-09-22 11:21
Posted By: Robert Campbell (calguy1000)

Actually,  I probably won't be doing this.  It is alot of work for a little
gain.  I am moving towards putting everything into files.

What you can do right now is use the {cms_module_hint} plugin.  To allow
customizing the template.

a:  Put your template in assets/templates/selfreg_register.tpl
b: In a template before content is parsed, in the global metadata, or the smarty
tags specific to this page you would add something like:
{cms_module_hint module=SelfRegistration
regtemplate='file:selfreg_register.tpl'}