This might sound strange, but I would like printing support on MarsEdit. I find that proofreading hard copies of things I write improves my prose. I don't usually do that on a blog, but sometimes I need to. The extra step of moving the text to a different editor seems unnecessary. Ideally, the printing support would include the preview window.
Explanation: Something good happens when I have my words printed on paper. For whatever reason, I can be more objective and pick up on more issues. I think it has something to do with expectations: we forgive a lot on screen, because this is something like a spoken culture. Print matter demands higher standards.
Thank you for considering this request.