I know there is a drafts extnesion, but does that support VisualEditor? If not, are there alternatives?
Topic on Project:Support desk
Not sure what you mean by 'drafts template' but what you're asking is not possible currently, even with the source editor. So you may have to look for extension that facilitates that. Something like Extension:Drafts. (Draft extension is unmaintained, FYI)
I meant extension, my bad.