Current email variables delineate between a variable being able to be used in subject or the body and also differ from email to email.
I’d like to suggest that there just be a list of variables that you can use anywhere in messaging that are standardized and available as placeholders.
So rather than this:
I should be able to use a variable anywhere I think it’s best to include. For example, if I want to say the community name in a subject or in the body, that shouldn’t be restricted based on the email I’m sending.