Remove all hardcoded text, replace with mapping table function

There is a lot of hardcoded text in a Themler theme, especially in the Woocommerce product and cart pages. Looking at many other Answers posts, its the same for Virtuemart and other platforms.
For example in the "Cart control, the header text, table header text and totals box text is all hardcoded.
The only way to change it is using a child theme (in Wordpress) and manually edit a number of php files. Not ideal as then any code updates of these files is not use due to the child theme. This is not a viable solution.
There is no obvious text mapping file either for multi languages, again stated in many posts in this forum.
This is a MAJOR issue for producing websites for customers, and major limitation of Themler.

So the suggestion is:
Provide a text mapping table as part of the template, mapping each fixed text element to a theme specified text
Remove ALL hardcoded text in a Themler theme and put in the mapping table
Function for import/export of the mapping table to allow for loading a translation table for each new template