Thank you for your response. That was all the questions I had. I am confident I can pull off making some v2 themes. My first one is just experimental where I just slap on some images and see how it works then I can be more intentional about what...
All v1 values can be edited freely in the Creator before updating to v2
You'll have to manually add the v2 values to the .them document after you've finished your v1 themes and then adjust coordinates by testing how they look on your Wii/TV.
If you load the v2.them in the theme creator it will overwrite the document. It still uses existing values that it handles, but yes it removes anything else.
Good practice is to begin with a v1.them and when you're ready, add and adjust the...