Please give us some more formatting capability.
Let's start with the easiest: copy format... it would save so much time, not having to make manual changes to every part of the email that I want to change the formatting for.
Blank line formatting - to be able to make a blank line the font size I want so that I can manage the visual impact that line spacing allows you. Having a different amount of line space after a section heading vs between paragraphs, etc.
There are more, but that's a good place to start. Thanks