The main tool of a blogging platform is its editor. We need an improved editor on the site itself, plus a small editor for comments as well.

I also think the "Welcome to the Blockchain" screen that is displayed to non-logged-in visitors should go. I mean it was ok 4-5 months ago, when it was more like a placeholder for something that will be more appropriate in the future, now it must change.

I know I didn't say anything radical here, but small things make the difference.