The window size and position is fine; I like being able to easily refer to other emails.

It's what they've done to the editing that bugs me.

- It encourages top-posting. To bottom-post, you have to click the "..." button, and then remove the two blank lines at the top.

- Fast selection of text with shift-Pg{Up,Dn} no longer works.

- Firefox's "It's All Text" add-on, which lets you drop into a real editor to edit a textbox, no longer works with it.