Wow, I was pleasantly surprised to see that Reply 2.0 is live now.
One thing that I meant to mention from the mockups but think I neglected was the [ B I ] buttons instead of the [ A ˅ ] dropdown that's in VE and SD. Really happy to see [ A ˅ ] in the release version.
:) (I'm not fussed whether bold and italic get their own buttons or appear on a submenu, but I want to be able to access all the other formatting like small, code, etc.)
I had a small difficulty on iOS where I selected some text in the top line, and the native context menu obscured the toolbar. There was no way to make it disappear or scroll it out of the way, so I inserted a couple of temporary newlines to move the text down. Short of putting the toolbar below, which is rather drastic, I don't see an easy design fix for that.