I second this request! Would also love the default to be American English (rather than British). We have to request to have it switched every time an update has been made.
Also interested. This has been requested for Ts & Cs which need specific text to be bold. Would help to format this in the comment rather than attach a word doc or screen grab.
I'm not sure what the new update has for formatting, but in the integrated version this isn't possible. It's the #1 complaint I have about ProofHQ that the designer can't copy/paste a comment with the formatting, and are required to find words like [BOLD] and [ITALIC] within lengthy text. We italicize A LOT!