I like MarsEdit in all ways except one: it didn't offer a way to save automatically posts as local text or HTML documents. This is pretty important to me because I drop all my blog posts into Devonthink Pro when I'm done with them.
About a year and a half ago I sent a feature request about this to Red Sweater's support, not long after I bought MarsEdit. Today I opened it for the first time in a year or so, mostly to see if this feature had made it in any updates. No dice. So let me request it here!
EDIT: And, two years ago, I left a comment in a separate thread
. I'd forgotten about that!