I've modified the code that is automatically included when you make a 2.0 template. Everything is working great, but I'm stuck in three areas:
Thanks for any help!
1/ Stop trying, it does not work I have already raised this to PM a few weeks ago. See Re: Email editor 2.0: How is mktoSnippet default supposed to work?
2/ No, you cannot create a text only template. Vote here: Text version of email templates
3/ Never tried it, but I do not think there is a possibility to do this. Nice idea, though. See Edit default from email address and name